Fixed NVIZ GRASS module (did not work)

git-svn-id: http://sextante.googlecode.com/svn/trunk/soft/bindings/qgis-plugin@223 881b9c09-3ef8-f3c2-ec3d-21d735c97f4d

Author: paolo.cavallini

src/sextante/grass/description/nviz.txt

@@ -2,7 +2,7 @@ nviz
 nviz - Visualization and animation tool for GRASS data.
 Visualization(NVIZ)
 ParameterMultipleInput|elevation|Name of elevation raster map|3|False
-ParameterMultipleInput|color|Name of raster map(s) for Color|-1|False
+ParameterMultipleInput|color|Name of raster map(s) for Color|3|False
 ParameterMultipleInput|vector|Name of vector lines/areas overlay map(s)|-1|False
-ParameterMultipleInput|point|Name of vector points overlay file(s)|-1|False
-ParameterMultipleInput|volume|Name of existing 3d raster map|-1|False
+ParameterMultipleInput|point|Name of vector points overlay file(s)|0|True
+ParameterMultipleInput|volume|Name of existing 3d raster map|3|True