Add testcases for CU21. Update opcode table.
WRT the memcheck test: the good news is we get all the complaints
we want. The bad news is:
- the line numbers from within do_cu21 are off
- there are 2 complaints when attempting to convert from
  an uninitialised input buffer instead of one. One of them has a 
  completely bogus line number.

Possibly due to bad debug info?  Let's see what happens on machines
with more recent GCCs. 


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12765 a5019735-40e9-0310-863c-91ae7b9d1cf9
15 files changed