databases/ruby-gdbm: Gemify gdbm

since gdbm is gemified in upstream after Ruby 2.5 [1]. Ruby 2.4 can also
use the gdbm gem because it is a gem!

- Add MOVED entry
- Bump PORTEPOCH because PORTVERSION goes barwards
- Update pkg-descr and WWW
- Remove unnecessary pkg-message

[1] https://bugs.ruby-lang.org/issues/5481

Update lang/ruby* ports:

- Do not build gdbm together with Ruby interpreter, but build as a rubygem
- Remove ${BUILD_WRKSRC}/ext/gdbm instead of moving it to ${WRKDIR}
- Update pkg-message to mention rubygem-gdbm instead of ruby-gdbm

Also following changes are made to ruby-gdbm consumers:

- Updade dependency to depend on rubygem-gdbm
- Bump PORTREVISION due to dependency change

PR:		230436
Submitted by:	Yasuhiro KIMURA <yasu@utahime.org>
Sponsored by:	HAW International, Inc.

3 files changed, 42 insertions, 0 deletions

diff --git a/databases/rubygem-gdbm/Makefile b/databases/rubygem-gdbm/Makefile
new file mode 100644
index 000000000000..1cf3d3bb675c
--- /dev/null
+++ b/databases/rubygem-gdbm/Makefile
@@ -0,0 +1,20 @@
+# Created by: Akinori MUSHA aka knu <knu@idaemons.org>
+# $FreeBSD$
+
+PORTNAME=	gdbm
+PORTVERSION=	2.0.0
+PORTEPOCH=	2
+CATEGORIES=	databases rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	ruby@FreeBSD.org
+COMMENT=	Ruby extension to GDBM library
+
+LICENSE=	BSD2CLAUSE
+
+LIB_DEPENDS=	libgdbm.so:databases/gdbm
+
+USES=		gem
+USE_RUBY=	yes
+
+.include <bsd.port.mk>
diff --git a/databases/rubygem-gdbm/distinfo b/databases/rubygem-gdbm/distinfo
new file mode 100644
index 000000000000..baa30a32921b
--- /dev/null
+++ b/databases/rubygem-gdbm/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1533630322
+SHA256 (rubygem/gdbm-2.0.0.gem) = 1097164950c3c9f08f9aa670067b830329c151fec31b922e694ba47f87319b58
+SIZE (rubygem/gdbm-2.0.0.gem) = 11776
diff --git a/databases/rubygem-gdbm/pkg-descr b/databases/rubygem-gdbm/pkg-descr
new file mode 100644
index 000000000000..62719480e11c
--- /dev/null
+++ b/databases/rubygem-gdbm/pkg-descr
@@ -0,0 +1,19 @@
+Ruby extension for GNU dbm (gdbm) -- a simple database engine for
+storing key-value pairs on disk.
+
+GNU dbm is a library for simple databases. A database is a file that
+stores key-value pairs. Gdbm allows the user to store, retrieve, and
+delete data by key. It furthermore allows a non-sorted traversal of
+all key-value pairs. A gdbm database thus provides the same
+functionality as a hash. As with objects of the Hash class, elements
+can be accessed with []. Furthermore, GDBM mixes in the Enumerable
+module, thus providing convenient methods such as #find, #collect,
+#map, etc.
+
+A process is allowed to open several different databases at the same
+time. A process can open a database as a "reader" or a
+"writer". Whereas a reader has only read-access to the database, a
+writer has read- and write-access. A database can be accessed either
+by any number of readers or by exactly one writer at the same time.
+
+WWW: https://rubygems.org/gems/gdbm