This patch by adrian.sendroiu@freescale.com fixes the lrmw and stmw
instructions.

The patch also adds ppc32 and ppc64 test cases for the instructions.

The patch is a fix for bugzilla 329956 "valgrind crashes when lmw/stmw instructions are used on ppc64".

The VEX code commit is 2802




git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13780 a5019735-40e9-0310-863c-91ae7b9d1cf9