* configure.ac (gcc_cv_ld_sol2_emulation): Test for GNU ld *_sol2
	linker emulations.
	* configure: Regenerate.
	* config.in: Regenerate.

	* config/i386/sol2-10.h [TARGET_GNU_LD] (I386_EMULATION): Define.
	(X86_64_EMULATION): Define.
	(TARGET_LD_EMULATION): Use them.

	* config/sparc/sol2-gld-bi.h (SPARC32_EMULATION): Define.
	(SPARC64_EMULATION): Define.
	(LINK_ARCH_SPEC): Use them.

From-SVN: r160178