gcc-dg.exp (gcc-dg-prune): Return "::unsupported::memory full" if the linker on spu...

gcc-dg.exp (gcc-dg-prune): Return "::unsupported::memory full" if the linker on spu-*-* warns about...

	* lib/gcc-dg.exp (gcc-dg-prune): Return "::unsupported::memory
	full" if the linker on spu-*-* warns about exceeding local store.

	And revert this patch:
	* lib/gcc-defs.exp (${tool}_check_compile): xfail test cases that
	fail to link due to relocation overflows on spu-*-*.

From-SVN: r120134