Lua 5.2 (but not earlier or later versions) has a powerpc platform detection
check.
This check was not using the preferred define `__powerpc__` so fails to
trigger on gcc.
It also assumes that all of powerpc is big-endian.
Check a more universal preprocessor define, and add support for the
upcoming FreeBSD PowerPC64LE.
Submitted by: Daniel Kolesa <daniel@octaforge.org>
Reviewed by: luporl
Approved by: portmgr (blanket: runtime fix)
Differential Revision: https://reviews.freebsd.org/D26234
3c7e4e45ea