rpmgs: add watch file support (via rpm-uscan)

bin/rpmgs

@@ -405,6 +405,19 @@ fi
 
 test -z "$LISTNAMES" && print_error
 
+if $EPMCMD assure gear-rules-verify perl-Gear-Rules ; then
+    docmd gear-rules-verify
+    gear-rules-verify 2>&1 | grep -q "gear-rules-verify should be run in clean repository" && fatal
+    if gear-rules-verify | grep "Ready for tarball update" ; then
+        [ -n "$GSSETVERSION" ] && warning "we will ignore version and update to the latest version from watch file"
+        $EPMCMD assure rpm-uscan
+        $EPMCMD assure gear-uupdate
+        docmd rpm-uscan --force-action gear-uupdate
+        #docmd gammit
+        exit 0
+    fi
+fi
+
 [ -z "$GSSETRELEASE" ] || GSSKIPADDCHANGELOG=1
 
 for spec in $LISTNAMES