s390: Add support for the ecag insn. Patch from Divya Vyas
(divyvyas@linux.vnet.ibm.com) with mods to terminate the super block
with EmFail in case the insn is not available on the host.
Part of fixing bugzilla #275800.


git-svn-id: svn://svn.valgrind.org/vex/trunk@2488 8f6e269a-dfd6-0310-a8e1-e2731360e62c
5 files changed