Add a field 'UChar delta' to IRStmt_IMark, and use it to carry around
the T bit for the instruction when the instruction is a ARM/Thumb.
This more or less avoids introducing Thumb specific hacks in the IR,
yet makes it possible to identify, from an IMark, whether it refers to
a Thumb or ARM instruction.  This is important for the GDB server
integration to work properly on Thumb code.

Patch from bug 214909 comment 99 (vex part).
(Philippe Waroquiers, philippe.waroquiers@skynet.be)



git-svn-id: svn://svn.valgrind.org/vex/trunk@2153 8f6e269a-dfd6-0310-a8e1-e2731360e62c
4 files changed