src/lib/libstdthreads, branch upstream/11.2.0

Revert r330897:

2018-03-29T02:50:57Z

This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re)

Partial merge of the SPDX changes

2018-03-14T03:19:51Z

These changes are incomplete but are making it difficult to determine what other changes can/should be merged. No objections from: pfg

MFC r312452-r312512:

2017-02-10T07:32:40Z

r312452-r312512: - Use SRCTOP-relative paths to other directories instead of .CURDIR-relative ones This simplifies pathing in make/displayed output - Use .CURDIR:H instead of .CURDIR to simplify pathing in output, etc

First pass through library packaging.

2016-02-04T21:16:35Z

META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host.

2015-11-25T19:10:28Z

This both avoids some dependencies on xinstall.host and allows bootstrapping on older releases to work due to lack of at least 'install -l' support. Sponsored by: EMC / Isilon Storage Division

META_MODE: Remove DEP_RELDIR from Makefile.depend files.

2015-09-25T19:26:08Z

This has not been needed since r284171 in projects/bmake. Sponsored by: EMC / Isilon Storage Division

Add META_MODE support.

2015-06-13T19:20:56Z

Off by default, build behaves normally. WITH_META_MODE we get auto objdir creation, the ability to start build from anywhere in the tree. Still need to add real targets under targets/ to build packages. Differential Revision: D2796 Reviewed by: brooks imp

Merge sync of head

2015-05-27T01:19:58Z

Use pthread_mutex_trylock(3) to implement mtx_trylock(3).

2015-02-26T16:39:57Z

Noted and tested by: Vineela PR: 198050 Sponsored by: The FreeBSD Foundation MFC after: 1 week

Check that the pointer to the thread return value is not NULL before

2015-02-26T09:42:03Z

dereferencing. NULL is allowed by C11 and must be handled. Reported and tested by: Vineela PR: 198038 Sponsored by: The FreeBSD Foundation MFC after: 1 week