Merge toplevel configure.ac bits from Binutils

GCC and Binutils had a common ./configure.ac after this commit:

	commit 08d081652f50df83f7e9768f8dbb7a99b0df50a2
	Author: sandra <sandra@138bc75d-0d04-0410-961f-82ee72b054a4>
	Date:   Wed May 14 23:20:59 2014 +0000

	2014-05-14  Sandra Loosemore  <sandra@codesourcery.com>

		* configure.ac (target_makefile_frag): Set for nios2-*-elf*.
		* configure: Regenerated.

		config/
		* mt-nios2-elf: New file.

Based on that file version, all GCC and Binutils commits to this file were
applied. This pulls in the following missing Binutils changes to configure.ac:

2014-07-21  Joel Sherrill  <joel.sherrill@oarcorp.com>

	Disable gdb for or1k*-*-* until supported
	* configure.ac (or1k*-*-*): Disable gdb.
	* configure: Regenerated.

2014-07-27  Joel Sherrill <joel.sherrill@oarcorp.com>

	GDB not supported for or1k*-*-rtems*
	* configure.ac (or1k*-*-rtems*): gdb not supported.  The ordering
	of the stanzas results in this not being caught by or1k*-*-* later.
	* configure. Regenerated.

2014-09-06  Kuan-Lin Chen  <kuanlinchentw@gmail.com>

	* configure: Disable gdb for nds32*-*-* until supported.
	* configure.ac: Disable gdb for nds32*-*-* until supported.

2014-09-12  Andrew Bennett  <andrew.bennett@imgtec.com>

	* configure.ac: Add mips*-img-elf* target triple.
	* configure: Regenerate.

For this patch:

2014-11-26  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* configure.ac: Merge with Binutils.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218100 138bc75d-0d04-0410-961f-82ee72b054a4
Merge ./config/ChangeLog with missing entries from Binutils

2014-11-26  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* config/ChangeLog: Merge entries from Binutils

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218101 138bc75d-0d04-0410-961f-82ee72b054a4
Merge the ./config directory between GCC and Binutils

This pulls in the missing Binutils pieces into the ./config
directory. Contains these missing Binutils changes:

2014-08-14  Alan Modra  <amodra@gmail.com>

	* plugins.m4: Test for dlfcn.h or windows.h here to set default
	for --enable-plugins.  Report error if someone tries to enable
	plugins on a host we don't support.

2014-08-19  Alan Modra  <amodra@gmail.com>

	* plugins.m4 (AC_PLUGINS): If plugins are enabled, add -ldl to
	LIBS via AC_SEARCH_LIBS.

For this commit:

2014-11-26  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* config/plugins.m4: Merge from Binutils.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218102 138bc75d-0d04-0410-961f-82ee72b054a4
Regenerate ./configure

2014-11-26  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

	* configure: Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218103 138bc75d-0d04-0410-961f-82ee72b054a4
	Allow partial specialization of variable templates.
	* cp-tree.h (TINFO_USED_TEMPLATE_ID): New.
	* decl.c (duplicate_decls): Copy it.
	* error.c (dump_decl) [TEMPLATE_ID_EXPR]: Handle variables.
	* parser.c (cp_parser_decltype_expr): Do call finish_id_expression
	on template-ids.
	* pt.c (register_specialization): Remember variable template insts.
	(instantiate_template_1): Find the matching partial specialization.
	(check_explicit_specialization): Allow variable partial specialization.
	(process_partial_specialization): Likewise.
	(push_template_decl_real): Likewise.
	(more_specialized_partial_spec): Rename from more_specialized_class.
	(most_specialized_partial_spec): Rename from most_specialized_class.
	(get_partial_spec_bindings): Rename from get_class_bindings.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218104 138bc75d-0d04-0410-961f-82ee72b054a4