Add support for ARMv8 AArch64 (the 64 bit ARM instruction set).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13770 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add test cases for AArch64 integer instructions (not wired up).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13771 a5019735-40e9-0310-863c-91ae7b9d1cf9