Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -r dbb565b8d61c config.def.h
|--- a/config.def.h	Fri Jun 25 09:42:58 2010 +0200
|+++ b/config.def.h	Mon Jul 05 22:07:35 2010 -0500
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 failed at 14.
1 out of 1 hunks failed
done