[DynInst_API:] Accessing more x86 registers

[Josh Stone <jistone@xxxxxxxxxx>]

Hi Michael,

You mentioned to me at pdweek that you had a Dyninst patch which allowed
access to the special purpose registers on x86 (IP, SP, etc).  Could you
share that patch?  And I'd like to propose as well that this be added to
Dyninst proper, as we prefer not to carry extra patches when possible.

Thanks,
Josh