r.univar percentiles now allow doubles

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@41603 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/i.landsat.rgb/i.landsat.rgb.py

@@ -49,7 +49,7 @@
 #%end
 #%option
 #% key: strength
-#% type: integer
+#% type: double
 #% description: Cropping intensity (upper brightness level)
 #% options: 0-100
 #% answer : 98