MacOS only: fix somee compiler complaints about casting from pointers
and integers of a different size.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13525 a5019735-40e9-0310-863c-91ae7b9d1cf9
mips32/mips64: Add tests for lwl and lwr for mips32 and mips64.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13526 a5019735-40e9-0310-863c-91ae7b9d1cf9