Log Message:
Update to 0.7.2:

This release adds 64-bit Mach-O PIC support, --prefix and --suffix
options for naming globals, and support for newly specified AVX/AES
instructions not in the original spec. It also generates a GOTPCREL
relocation for "rel wrt ..gotpc" and optimizes non-strict push to
byte size in all possible cases, along with several other fixes.