Update autorevision with latest, portable, version
--- build_tools/autorevision.orig	2013-01-15 03:54:06.000000000 +0400
+++ build_tools/autorevision	2013-01-21 20:38:26.811933361 +0400
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (c) 2012 dak180
 # See http://opensource.org/licenses/bsd-license.php for licence terms
@@ -6,7 +6,7 @@
 # autorevision - extracts metadata about the head version from your repository.
 
 # Usage message.
-function arUsage {
+arUsage() {
 	cat > "/dev/stderr" << EOF
 usage: ./autorevision {-t output-type | -s symbol} [-o cache-file [-f] ] [-V]
 	Options include:
@@ -29,6 +29,8 @@
 	js			= javascript file
 	java			= Java file
 	javaprop		= Java properties file
+	tex			= (La)TeX file
+	m4			= m4 file
 
 The following are valid symbols:
 	VCS_TYPE
@@ -46,7 +48,7 @@
 }
 
 # Config
-ARVERSION="1.1"
+ARVERSION="1.4"
 TARGETFILE="/dev/stdout"
 while getopts ":t:o:s:Vf" OPTION; do
 	case "${OPTION}" in
@@ -73,14 +75,14 @@
 	esac
 done
 
-if [[ ! -z "${VAROUT}" ]] && [[ ! -z "${AFILETYPE}" ]]; then
+if [ ! -z "${VAROUT}" ] && [ ! -z "${AFILETYPE}" ]; then
 	# If both -s and -t are specified:
 	echo "error: Improper argument combination." 1>&2
 	exit 1
-elif [[ -z "${VAROUT}" ]] && [[ -z "${AFILETYPE}" ]]; then
+elif [ -z "${VAROUT}" ] && [ -z "${AFILETYPE}" ]; then
 	# If neither -s or -t are specified:
 	arUsage
-elif [[ -z "${CACHEFILE}" ]] && [[ "${CACHEFORCE}" = "1" ]]; then
+elif [ -z "${CACHEFILE}" ] && [ "${CACHEFORCE}" = "1" ]; then
 	# If -f is specified without -o:
 	arUsage
 fi
@@ -88,20 +90,20 @@
 
 # Functions to extract data from different repo types.
 # For git repos
-function gitRepo {
+gitRepo() {
 	cd "$(git rev-parse --show-toplevel)"
 
 	VCS_TYPE="git"
 
 	VCS_BASENAME="$(basename "${PWD}")"
 
-	# Is the working copy clean?
-	git diff --quiet HEAD &> /dev/null
+	 # Is the working copy clean?
+	test -z "$(git status -uno --porcelain)"
 	VCS_WC_MODIFIED="${?}"
 
 	# Enumeration of changesets
 	VCS_NUM="$(git rev-list --count HEAD 2>/dev/null)"
-	if [[ -z "${VCS_NUM}" ]]; then
+	if [ -z "${VCS_NUM}" ]; then
 		echo "warning: Counting the number of revisions may be slower due to an outdated git version less than 1.7.2.3. If something breaks, please update it." 1>&2
 		VCS_NUM="$(git rev-list HEAD | wc -l)"
 	fi
@@ -122,7 +124,7 @@
 	VCS_TAG="$(echo "${DESCRIPTION}" | sed -e "s:-g${VCS_SHORT_HASH}\$::" | sed -e 's:-[0-9]*$::')"
 
 	# Distance to last tag or an alias of VCS_NUM if there is no tag
-	if [[ ! -z "${DESCRIPTION}" ]]; then
+	if [ ! -z "${DESCRIPTION}" ]; then
 		VCS_TICK="$(echo "${DESCRIPTION}" | sed -e "s:${VCS_TAG}-::" -e "s:-g${VCS_SHORT_HASH}::")"
 	else
 		VCS_TICK="${VCS_NUM}"
@@ -133,7 +135,7 @@
 }
 
 # For hg repos
-function hgRepo {
+hgRepo() {
 	cd "$(hg root)"
 
 	VCS_TYPE="hg"
@@ -157,7 +159,7 @@
 	# or branch if no bookmark
 	VCS_BRANCH="$(hg id -B | cut -d ' ' -f 1)"
 	# Fall back to the branch if there are no bookmarks
-	if [[ -z "${VCS_BRANCH}" ]]; then
+	if [ -z "${VCS_BRANCH}" ]; then
 		VCS_BRANCH="$(hg id -b)"
 	fi
 
@@ -165,7 +167,7 @@
 	VCS_TAG="$(hg log -r "${VCS_NUM}" -l 1 --template '{latesttag}\n' 2>/dev/null | sed -e 's:qtip::' -e 's:tip::' -e 's:qbase::' -e 's:qparent::' -e "s:$(hg --config 'extensions.color=' --color never qtop 2>/dev/null)::" | cut -d ' ' -f 1)"
 
 	# Distance to last tag or an alias of VCS_NUM if there is no tag
-	if [[ ! -z "${VCS_TAG}" ]]; then
+	if [ ! -z "${VCS_TAG}" ]; then
 		VCS_TICK="$(hg log -r "${VCS_NUM}" -l 1 --template '{latesttagdistance}\n' 2>/dev/null)"
 	else
 		VCS_TICK="${VCS_NUM}"
@@ -176,7 +178,7 @@
 }
 
 # For bzr repos
-function bzrRepo {
+bzrRepo() {
 	cd "$(bzr root)"
 
 	VCS_TYPE="bzr"
@@ -194,7 +196,7 @@
 	VCS_FULL_HASH="$(bzr version-info --custom --template='{revision_id}\n')"
 
 	# The short hash
-	VCS_SHORT_HASH="$VCS_NUM"
+	VCS_SHORT_HASH="${VCS_NUM}"
 
 	# Nick of the current branch
 	VCS_BRANCH="$(bzr nick)"
@@ -203,7 +205,7 @@
 	VCS_TAG="$(bzr tags --sort=time | sed '/?$/d' | tail -n1 | cut -d ' ' -f1)"
 
 	# Distance to last tag or an alias of VCS_NUM if there is no tag
-	if [[ ! -z "${VCS_TAG}" ]]; then
+	if [ ! -z "${VCS_TAG}" ]; then
 		VCS_TICK="$(bzr log --line -r "tag:${VCS_TAG}.." | tail -n +2 | wc -l | sed -e 's:^ *::')"
 	else
 		VCS_TICK="${VCS_NUM}"
@@ -214,17 +216,17 @@
 }
 
 # For svn repos
-function svnRepo {
+svnRepo() {
 	VCS_TYPE="svn"
 
 	case "${PWD}" in
 	/*trunk*|/*branches*|/*tags*)
 		fn="${PWD}"
-		while [[ "$(basename "${fn}")" != 'trunk' ]] && [[ "$(basename "${fn}")" != 'branches' ]] && [[ "$(basename "${fn}")" != 'tags' ]] && [[ "$(basename "${fn}")" != '/' ]]; do
+		while [ "$(basename "${fn}")" != 'trunk' ] && [ "$(basename "${fn}")" != 'branches' ] && [ "$(basename "${fn}")" != 'tags' ] && [ "$(basename "${fn}")" != '/' ]; do
 			fn="$(dirname "${fn}")"
 		done
 		fn="$(dirname "${fn}")"
-		if [[ "${fn}" == '/' ]]; then
+		if [ "${fn}" = '/' ]; then
 			VCS_BASENAME="$(basename "${PWD}")"
 		else
 			VCS_BASENAME="$(basename "${fn}")"
@@ -250,7 +252,7 @@
 	VCS_FULL_HASH="${SVNVERSION}"
 
 	# The short hash
-	VCS_SHORT_HASH="$VCS_NUM"
+	VCS_SHORT_HASH="${VCS_NUM}"
 
 	# Current branch
 	case "${PWD}" in
@@ -260,13 +262,13 @@
 		while :
 		do
 			base="$(basename "${fn}")"
-			if [[ "$base" = 'trunk' ]]; then
+			if [ "${base}" = 'trunk' ]; then
 				VCS_BRANCH='trunk'
 				break
-			elif [[ "${base}" = 'branches' ]] || [[ "${base}" = 'tags' ]]; then
+			elif [ "${base}" = 'branches' ] || [ "${base}" = 'tags' ]; then
 				VCS_BRANCH="${lastbase}"
 				break
-			elif [[ "${base}" = '/' ]]; then
+			elif [ "${base}" = '/' ]; then
 				VCS_BRANCH=""
 				break
 			fi
@@ -290,7 +292,7 @@
 
 # Functions to output data in different formats.
 # For header output
-function hOutput {
+hOutput() {
 	cat > "${TARGETFILE}" << EOF
 /* Generated by autorevision - do not hand-hack! */
 #ifndef AUTOREVISION_H
@@ -316,7 +318,7 @@
 }
 
 # A header output for use with xcode to populate info.plist strings
-function xcodeOutput {
+xcodeOutput() {
 	cat > "${TARGETFILE}" << EOF
 /* Generated by autorevision - do not hand-hack! */
 #ifndef AUTOREVISION_H
@@ -342,7 +344,7 @@
 }
 
 # For bash output
-function shOutput {
+shOutput() {
 	cat > "${TARGETFILE}" << EOF
 # Generated by autorevision - do not hand-hack!
 
@@ -364,7 +366,7 @@
 }
 
 # For Python output
-function pyOutput {
+pyOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		0) VCS_WC_MODIFIED="False" ;;
 		1) VCS_WC_MODIFIED="True" ;;
@@ -390,7 +392,7 @@
 }
 
 # For Perl output
-function plOutput {
+plOutput() {
 	cat << EOF
 # Generated by autorevision - do not hand-hack!
 
@@ -412,7 +414,7 @@
 }
 
 # For lua output
-function luaOutput {
+luaOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		0) VCS_WC_MODIFIED="false" ;;
 		1) VCS_WC_MODIFIED="true" ;;
@@ -438,7 +440,7 @@
 }
 
 # For php output
-function phpOutput {
+phpOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		0) VCS_WC_MODIFIED="false" ;;
 		1) VCS_WC_MODIFIED="true" ;;
@@ -466,7 +468,7 @@
 }
 
 # For ini output
-function iniOutput {
+iniOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		0) VCS_WC_MODIFIED="false" ;;
 		1) VCS_WC_MODIFIED="true" ;;
@@ -489,7 +491,7 @@
 }
 
 # For javascript output
-function jsOutput {
+jsOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		1) VCS_WC_MODIFIED="true" ;;
 		0) VCS_WC_MODIFIED="false" ;;
@@ -522,7 +524,7 @@
 }
 
 # For Java output
-function javaOutput {
+javaOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		1) VCS_WC_MODIFIED="true" ;;
 		0) VCS_WC_MODIFIED="false" ;;
@@ -550,7 +552,7 @@
 }
 
 # For Java properties output
-function javapropOutput {
+javapropOutput() {
 	case "${VCS_WC_MODIFIED}" in
 		1) VCS_WC_MODIFIED="true" ;;
 		0) VCS_WC_MODIFIED="false" ;;
@@ -573,22 +575,61 @@
 EOF
 }
 
+# For m4 output
+m4Output() {
+	cat > "${TARGETFILE}" << EOF
+define(\`VCS_TYPE', \`${VCS_TYPE}')dnl
+define(\`VCS_BASENAME', \`${VCS_BASENAME}')dnl
+define(\`VCS_NUM', \`${VCS_NUM}')dnl
+define(\`VCS_DATE', \`${VCS_DATE}')dnl
+define(\`VCS_BRANCH', \`${VCS_BRANCH}')dnl
+define(\`VCS_TAG', \`${VCS_TAG}')dnl
+define(\`VCS_TICK', \`${VCS_TICK}')dnl
+define(\`VCS_FULLHASH', \`${VCS_FULL_HASH}')dnl
+define(\`VCS_SHIRTHASH', \`${VCS_SHORT_HASH}')dnl
+define(\`VCS_WC_MODIFIED', \`${VCS_WC_MODIFIED}')dnl
+EOF
+}
+
+# For (La)TeX output
+texOutput() {
+	case "${VCS_WC_MODIFIED}" in
+		0) VCS_WC_MODIFIED="false" ;;
+		1) VCS_WC_MODIFIED="true" ;;
+	esac
+	cat > "${TARGETFILE}" << EOF
+% Generated by autorevision - do not hand-hack!
+\def \vcsType {${VCS_TYPE}}
+\def \vcsBasename {${VCS_BASENAME}}
+\def \vcsNum {${VCS_NUM}}
+\def \vcsDate {${VCS_DATE}}
+\def \vcsBranch {${VCS_BRANCH}}
+\def \vcsTag {${VCS_TAG}}
+\def \vcsTick {${VCS_TICK}}
+\def \vcsFullHash {${VCS_FULL_HASH}}
+\def \vcsShortHash {${VCS_SHORT_HASH}}
+\def \vcsWCModified {${VCS_WC_MODIFIED}}
+\endinput
+EOF
+}
+
+
 
 # Detect and collect repo data.
-if [[ -f "${CACHEFILE}" ]] && [[ "${CACHEFORCE}" = "1" ]]; then
+if [ -f "${CACHEFILE}" ] && [ "${CACHEFORCE}" = "1" ]; then
 	# When requested only read from the cache to populate our symbols.
 	source "${CACHEFILE}"
-elif [[ ! -z "$(git rev-parse HEAD 2>/dev/null)" ]]; then
+elif [ ! -z "$(git rev-parse HEAD 2>/dev/null)" ]; then
 	gitRepo
-elif [[ ! -z "$(hg root 2>/dev/null)" ]]; then
+elif [ ! -z "$(hg root 2>/dev/null)" ]; then
 	hgRepo
-elif [[ ! -z "$(bzr root 2>/dev/null)" ]]; then
+elif [ ! -z "$(bzr root 2>/dev/null)" ]; then
 	bzrRepo
-elif [[ ! -z "$(svn info 2>/dev/null)" ]]; then
+elif [ ! -z "$(svn info 2>/dev/null)" ]; then
 	svnRepo
-elif [[ -f "${CACHEFILE}" ]]; then
+elif [ -f "${CACHEFILE}" ]; then
 	# We are not in a repo; try to use a previously generated cache to populate our symbols.
-	source "${CACHEFILE}"
+	. "${CACHEFILE}"
 else
 	echo "error: No repo or cache detected." 1>&2
 	exit 1
@@ -596,55 +637,59 @@
 
 
 # -s output is handled here.
-if [[ ! -z "${VAROUT}" ]]; then
-	if [[ "${VAROUT}" = "VCS_TYPE" ]]; then
+if [ ! -z "${VAROUT}" ]; then
+	if [ "${VAROUT}" = "VCS_TYPE" ]; then
 		echo "${VCS_TYPE}"
-	elif [[ "${VAROUT}" = "VCS_BASENAME" ]]; then
+	elif [ "${VAROUT}" = "VCS_BASENAME" ]; then
 		echo "${VCS_BASENAME}"
-	elif [[ "${VAROUT}" = "VCS_NUM" ]]; then
+	elif [ "${VAROUT}" = "VCS_NUM" ]; then
 		echo "${VCS_NUM}"
-	elif [[ "${VAROUT}" = "VCS_DATE" ]]; then
+	elif [ "${VAROUT}" = "VCS_DATE" ]; then
 		echo "${VCS_DATE}"
-	elif [[ "${VAROUT}" = "VCS_BRANCH" ]]; then
+	elif [ "${VAROUT}" = "VCS_BRANCH" ]; then
 		echo "${VCS_BRANCH}"
-	elif [[ "${VAROUT}" = "VCS_TAG" ]]; then
+	elif [ "${VAROUT}" = "VCS_TAG" ]; then
 		echo "${VCS_TAG}"
-	elif [[ "${VAROUT}" = "VCS_TICK" ]]; then
+	elif [ "${VAROUT}" = "VCS_TICK" ]; then
 		echo "${VCS_TICK}"
-	elif [[ "${VAROUT}" = "VCS_FULL_HASH" ]]; then
+	elif [ "${VAROUT}" = "VCS_FULL_HASH" ]; then
 		echo "${VCS_FULL_HASH}"
-	elif [[ "${VAROUT}" = "VCS_SHORT_HASH" ]]; then
+	elif [ "${VAROUT}" = "VCS_SHORT_HASH" ]; then
 		echo "${VCS_SHORT_HASH}"
-	elif [[ "${VAROUT}" = "VCS_WC_MODIFIED" ]]; then
+	elif [ "${VAROUT}" = "VCS_WC_MODIFIED" ]; then
 		echo "${VCS_WC_MODIFIED}"
 	fi
 fi
 
 
 # Detect requested output type and use it.
-if [[ ! -z "${AFILETYPE}" ]]; then
-	if [[ "${AFILETYPE}" = "h" ]]; then
+if [ ! -z "${AFILETYPE}" ]; then
+	if [ "${AFILETYPE}" = "h" ]; then
 		hOutput
-	elif [[ "${AFILETYPE}" = "xcode" ]]; then
+	elif [ "${AFILETYPE}" = "xcode" ]; then
 		xcodeOutput
-	elif [[ "${AFILETYPE}" = "sh" ]]; then
+	elif [ "${AFILETYPE}" = "sh" ]; then
 		shOutput
-	elif [[ "${AFILETYPE}" = "py" ]]; then
+	elif [ "${AFILETYPE}" = "py" ] || [ "${AFILETYPE}" = "python" ]; then
 		pyOutput
-	elif [[ "${AFILETYPE}" = "pl" ]]; then
+	elif [ "${AFILETYPE}" = "pl" ] || [ "${AFILETYPE}" = "perl" ]; then
 		plOutput
-	elif [[ "${AFILETYPE}" = "lua" ]]; then
+	elif [ "${AFILETYPE}" = "lua" ]; then
 		luaOutput
-	elif [[ "${AFILETYPE}" = "php" ]]; then
+	elif [ "${AFILETYPE}" = "php" ]; then
 		phpOutput
-	elif [[ "${AFILETYPE}" = "ini" ]]; then
+	elif [ "${AFILETYPE}" = "ini" ]; then
 		iniOutput
-	elif [[ "${AFILETYPE}" = "js" ]]; then
+	elif [ "${AFILETYPE}" = "js" ]; then
 		jsOutput
-	elif [[ "${AFILETYPE}" = "java" ]]; then
+	elif [ "${AFILETYPE}" = "java" ]; then
 		javaOutput
-	elif [[ "${AFILETYPE}" = "javaprop" ]]; then
+	elif [ "${AFILETYPE}" = "javaprop" ]; then
 		javapropOutput
+	elif [ "${AFILETYPE}" = "tex" ]; then
+		texOutput
+	elif [ "${AFILETYPE}" = "m4" ]; then
+		m4Output
 	else
 		echo "error: Not a valid output type." 1>&2
 		exit 1
@@ -653,7 +698,7 @@
 
 
 # If requested, make a cache file.
-if [[ ! -z "${CACHEFILE}" ]] && [[ ! "${CACHEFORCE}" = "1" ]]; then
+if [ ! -z "${CACHEFILE}" ] && [ ! "${CACHEFORCE}" = "1" ]; then
 	TARGETFILE="${CACHEFILE}"
 	shOutput
 fi