== [7.4.6] (unset) ==
+* Code refactoring of gcc/powerpc.h to avoid code duplication.
* Eliminate 'cast to long from void*' compiler warning in test_atomic.
* Fix (delete) comment for AO_and_full (x86).
* Fix missing printed value names (test_stack).
* Refine README about library downloading.
+* Support AIX/ppc (gcc).
* Support n32 ABI for mips64.
* Use LLD and SCD instructions on mips64.
Also, includes 7.2h changes.