* configure.srv [powerpc64-*-linux*]: Remove powerpc-e500.o from

	* configure.srv [powerpc64-*-linux*]: Remove powerpc-e500.o from
	srv_regobj.  Remove rs6000/powerpc-e500.xml and rs6000/power-spe.xml
	from reg_xmlfiles.
	* linux-ppc-low.c: Include <elf.h>.
	(PPC_FEATURE_HAS_ALTIVEC, PPC_FEATURE_HAS_SPE): Define.
	(ppc_hwcap): New global variable.
	(ppc_regmap): Remove __SPE__ #ifdef sections.
	(ppc_regmap_e500): New global variable.
	(ppc_cannot_store_register): Update __SPE__ special case.
	(ppc_get_hwcap): New function.
	(ppc_arch_setup): Use it to determine whether inferior supports
	AltiVec or SPE registers.  Set the_low_target.regmap if appropriate.
	(ppc_fill_vrregset, ppc_store_vrregset): Define unconditionally.
	Do not access registers if target does not support AltiVec.
	(ppc_fill_evrregset, ppc_store_evrregset): Define unconditionally.
	Do not access registers if target does not support SPE.
	(target_regsets): Unconditionally include AltiVec and SPE regsets.