gdb/

gdb/
	* ppc-sysv-tdep.c (ppc64_sysv_abi_push_dummy_call): Add support
	for the "generic" vector ABI used with GCC 4.3 and later.
	(ppc64_sysv_abi_return_value): Likewise.

gdb/testsuite:
	* gdb.arch/altivec-abi.exp: Skip "generic" tests on 64-bit when
	using a GCC 4.1 or 4.2 compiler.  Add an additional test variant
	"generic ABI, auto".
	(altivec_abi_tests): Accept vectors returned by reference.