* elf64-ppc.c (ppc_stub_name): Tweak names for better readability.

	* elf64-ppc.c (ppc_stub_name): Tweak names for better readability.
	(ppc64_elf_adjust_dynamic_symbol): Allow copy relocs against
	function descriptors, but warn.
	(ppc_build_one_stub): Remove a couple of vars.  Move code creating
	stub syms so that we can avoid a stub sym if we already have a
	plt sym.  Do not redefine an existing symbol.
	(ppc64_elf_build_stubs): When --emit-stub-syms, print a symbol for
	glink.