[binutils-gdb] Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured.

[sergiodj+buildbot at redhat dot com]

*** TEST RESULTS FOR COMMIT 6c3bc0f82c625d425b09c01f96b64946abe4118e ***

Author: Nick Clifton <nickc@redhat.com>
Branch: master
Commit: 6c3bc0f82c625d425b09c01f96b64946abe4118e

Reset x86 Linux targets to not compressing debug sections by default.  Enable compression of debug sections by default in the linker, if so configured.

	PR gas/19109
.	* configure.ac: Note the 'none' is an acceptable argument to
	--enable-compressed-debug-sections.
	* configure: Regenerate.

gas	* configure.ac: Restore --enable-compressed-debug-sections.
	Do not enable compressed debug sections by default for x86 Linux
	targets.
	* configure: Regenerate.

ld	* configure.ac: Add --enable-compressed-debug-sections.
	* configure: Regenerate.
	* config.in: Regenerate.
	* ld.texinfo: Document how to determine the default action for
	debug sections.
	* ldmain.c (main): If DEFAULT_FLAG_COMPRESS_DEBUG is defined then
	set the compress_debug field of the link_info structure to
	zlib-gabi.
	* lexsup.c (elf_static_list_options): Output the default setting
	for the --compress-debug-sections option.
	* NEWS: Mention the new configure option.