Enlarged exception catching when testing for GDAL presence

Other import errors than ImportError can happen during import of
GDAL files (e.g. OGRException). Some further auditing may be needed
if we want to restrict the catched exceptions at a later stage.
Thanks Ramiro Morales for raising the issue.

django/contrib/gis/gdal/__init__.py

@@ -41,7 +41,7 @@ try:
     from django.contrib.gis.gdal.srs import SpatialReference, CoordTransform
     from django.contrib.gis.gdal.geometries import OGRGeometry
     HAS_GDAL = True
-except ImportError:
+except Exception:
     HAS_GDAL = False
 
 try: