David Brownell <david-b@pacbell.net> Bugfix some instruction decoding ... I've crafted asm files

with testcases covering several new encodings in these sections
of the ARMv7-M arch manual:

 A5.3.12 Data processing (register)
 A5.3.13 Miscellaneous operations
 A5.3.14 Multiply, and multiply accumulate
 A5.3.15 Long multiply, long multiply accumulate, and divide

The issues were mostly in '12 and '13; some new related 16-bit
opcodes had issues too.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2563 b42882b7-edfa-0310-969c-e2dbd0fdcd60