Handle Iop_QAdd16Ux2.  Needed for recent ARM v6media additions committed
in vex r2731.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13446 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add test cases pertaining to vex r2731, for the following instructions:
  SSAX SXTAB16 SHASX SHSAX SHSUB16 SHSUB8
  UASX USAX UQADD16 UQASX UQSAX UHASX UHSAX REVSH

Pertaining to
  321363 321364 321466 321467 321468 321619 321704
  321620 321621 321692 321694 321696 321697 321703

(Vasily, w.golubev@mail.ru)



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13447 a5019735-40e9-0310-863c-91ae7b9d1cf9
Update bug status.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13448 a5019735-40e9-0310-863c-91ae7b9d1cf9