games/blackshadeselite is not jobs safe.

This one has failed on me multiple times under high contention.
It appears that its is trying to create objects files in the objs
directory before that directory is created (a race between c++
and mkdir)

games/blackshadeselite/Makefile

@@ -30,6 +30,8 @@ PORTDATA=	*
 
 OPTIONS_DEFINE=	DOCS
 
+MAKE_JOBS_UNSAFE=	yes
+
 post-extract:
 	@${FIND} ${WRKSRC}/Data -name '._*' -delete