s390: Valgrind-side changes to fixing bugzilla #274695:
Testcase, vbit tester update, memcheck support for the new IROps,
NEWS announcement and opcode list update.
Patch by Christian Borntraeger (borntraeger@de.ibm.com).
Vbit tester tweaks by myself.
Fixes bugzilla #274695.
See also companion patch VEX r2496.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12921 a5019735-40e9-0310-863c-91ae7b9d1cf9
11 files changed