* configure.in (CROSS): Define NATIVE_CROSS.
	* configure: Regenerate.
	* gcc.c (STARTFILE_PREFIX_SPEC): Define.
	(startfile_prefix_spec): New var.
	(static_specs): Add startfile_prefix_spec.
	(do_spec_2): Split out from..
	(do_spec): ..here.
	(main): Process startfile_prefix_spec.
	* config/rs6000/linux64.h (LINK_OS_LINUX_SPEC) Change name of
	dynamic linker.
	(STARTFILE_PREFIX_SPEC): Define.
	(STARTFILE_LINUX_SPEC, ENDFILE_LINUX_SPEC): Rewrite without
        absolute paths.

From-SVN: r53752