avoid gdalconst deprecation warning

Author: jef-n

python/plugins/sextante/tools/raster.py

@@ -24,7 +24,7 @@
 __revision__ = '$Format:%H$'
 
 from osgeo import gdal
-from gdalconst import *
+from osgeo.gdalconst import *
 import struct
 
 def scanraster(layer, progress):
@@ -39,4 +39,4 @@ def scanraster(layer, progress):
         for value in values:
             if value == nodata:
                 value = None
-            yield value
+            yield value