Add powerpc64le as an alias for ppc64
Add powerpc64le as an alias for ppc64

Add powerpc64le as an alias for the ppc64 build target.

randombit/botan,randombit/botan,webmaster128/botan,webmaster128/botan,webmaster128/botan,randombit/botan,webmaster128/botan,randombit/botan,randombit/botan,webmaster128/botan