config-list.mk: Extract target name correctly

With my last change, `sed' is used to cut out the target name from a listed
target. Since there may be additional OPTions encoded in the "target", I tried
to get only the first submatch before an `OPT'. However, `sed' uses longest
match, so I'm re-writing this using awk.

  If anybody is like using `gawk' or anything different, please feel free to
drop another patch. Since this is usually called by hand or by robots under
review, I don't see much of a problem here.

2015-01-05  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

contrib/
       * config-list.mk: Use shortest match for OPT to find the actual
       target name.

From-SVN: r219196

contrib/ChangeLog

@@ -1,3 +1,8 @@
+2015-01-05  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
+
+	* config-list.mk: Use shortest match for OPT to find the actual
+	target name.
+
 2014-12-17  Sergio Durigan Junior  <sergiodj@redhat.com>
 
 	* dg-extract-results.sh: Use --text with grep to avoid issues with

contrib/config-list.mk

@@ -97,8 +97,7 @@ $(LIST): make-log-dir
 	-mkdir $@
 	(											\
 		cd $@ &&									\
-		echo $@ &&									\
-		TGT=`echo $@ | sed -e 's/^\(.*\)OPT.*$$/\1/'` &&				\
+		TGT=`echo $@ | awk 'BEGIN { FS = "OPT" }; { print $$1 }'` &&			\
 		TGT=`../../gcc/config.sub $$TGT` &&						\
 		case $$TGT in									\
 			*-*-darwin* | *-*-cygwin* | *-*-mingw* | *-*-aix*)			\