tools: Add a config that filters to stage4 only.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

tools/catalyst-auto-filter-stage4only.conf

@@ -1,13 +1,8 @@
 # This is the config file for the catalyst-auto script. It should be pretty
 # self-explanatory.
 
-B=`readlink -f $0`
-BASECONF=${B/-daily}
-if [ ! -e $BASECONF ]; then
-	echo "Could not find base config from $B" 1>&2
-	exit 1
-fi
-source ${BASECONF}
+# This configuration does not set any builds of it's own, but rather removes
+# everything EXCEPT stage4 builds.
 for s in $SETS ; do
 	var=SET_${s}_SPECS
 	val=${!var}
@@ -19,6 +14,5 @@ for s in $SETS ; do
 	done
 	eval "export $var='${newval}'"
 done
-printenv |grep SET
 
 # vim:ft=sh: