* ld-powerpc/powerpc.exp: Substitute for le in options_regsub(ld).

	* ld-powerpc/powerpc.exp: Substitute for le in options_regsub(ld).
	Correct ppc64elftests option replacement.
	(supports_ppc64): Match elf64lppc too.
	* ld-powerpc/relbrlt.d: Update for little-endian.
	* ld-powerpc/symtocbase.d: Likewise.
	* ld-powerpc/tls.t: Likewise.
	* ld-powerpc/tlsexetoc.g: Likewise.
	* ld-powerpc/tlsso.d: Likewise.
	* ld-powerpc/tlsso.g: Likewise.
	* ld-powerpc/tlstoc.t: Likewise.
	* ld-powerpc/tlstocso.d: Likewise.
	* ld-powerpc/tlstocso.g: Likewise.
	* ld-powerpc/tlstocso.t: Likewise.
	* ld-powerpc/tocopt.d: Likewise.
	* ld-powerpc/tocopt2.d: Likewise.
	* ld-powerpc/tocopt3.d: Likewise.
	* ld-powerpc/tocopt4.d: Likewise.
	* ld-powerpc/tocopt5.d: Likewise.