Changed r.out.tiff.qgm to fix ticket #1628.

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@10944 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: rugginoso

src/plugins/grass/modules-common/r.out.tiff.qgm

@@ -8,5 +8,5 @@
 	<flag key="t" />
 	<flag key="l" />
 	<flag key="v" />	
-	<option key="output" />
+	<file key="output" type="new" />
 </qgisgrassmodule>