GDB MI Reverse Commands added [2 of 3]

[Eli Zaretskii]

> Date: Wed, 16 Dec 2009 11:02:33 -0800
> From: Michael Snyder <msnyder@vmware.com>
> CC: "vladimir@codesourcery.com" <vladimir@codesourcery.com>,   "jakob@virtutech.com" <jakob@virtutech.com>,  "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
> 
> we have a reverse deadlock.  ;-)

Only if Vladimir is unconvinced.