Attempting to link big-endian PowerPC binaries using a
cross-hosted linker would fail due to the linker
generating a segmentation fault.
Unable to link big-endian PPC binaries if not using a
native PPC toolchain.
Update a PowerPC patch that was being applied to the
linker sources so that it would work even when building
a cross toolchain.
Big-endian PowerPC binaries (both 32-bit and 64-bit) can
now be linked using a cross-hosted toolchain.