Re: PowerPC64 DT_RELR

HJ: "There are 238 R_PPC64_NONEs in libc.so.6 alone."
Indeed, let's make them go away.  I had the SYMBOL_REFERENCES_LOCAL
test in the wrong place.  check_relocs is too early to know whether a
symbol is dynamic in a shared library.  Lots of glibc symbols are made
local by version script, but that doesn't happen until
size_dynamic_sections.

	* elf64-ppc.c (ppc64_elf_check_relocs): Don't count relative relocs
	here depending on SYMBOL_REFERENCES_LOCAL.
	(dec_dynrel_count): Likewise.
	(allocate_dynrelocs): Do so here instead.