[Isaac.Hollander@morganstanley.com] external widget and libXt

This was still sitting around in my mailbox---it's so old we don't even have it in the archives anymore, but the patch still essentially applied. Isaac Hollander sent a followup with a corrected patch, which is what's attached. Any reason I shouldn't apply this? 2007-12-18 Kenny Chien <Kenny.Chien(a)morganstanley.com&gt; * extw-Xt.c (extw_wait_for_response): Don't use undocumented internal Xt functions, avoiding inconsistent behavior between different Solaris versions.