nexuiz: flagged NOPARALLEL

Note:

Running parallel make jobs seems to be unreliable while build nexuiz.
It also seems to behave slightly different when ccache is enabled for
the build, and the issue was actually discovered with ccache disabled.

games/nexuiz/nexuiz.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../nexuiz/nexuiz.desc
-[COPY] Copyright (C) 2006 - 2010 The OpenSDE Project
+[COPY] Copyright (C) 2006 - 2011 The OpenSDE Project
 [COPY] Copyright (C) 2004 - 2006 The T2 SDE Project
 [COPY]
 [COPY] More information can be found in the files COPYING and README.
@@ -25,6 +25,7 @@
 [M] The OpenSDE Community <list@opensde.org>
 
 [C] extra/game
+[F] NOPARALLEL
 [F] X11R6
 
 [L] GPL