Tweaked a GIS expected test failure.

The test was only checking for geos version 3.0.0, but it failed for all
3.0.x versions. This change makes the version check skip the test for
anything 3.0-ish.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10381 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/gis/geos/tests/test_io.py

@@ -91,7 +91,7 @@ def test04_wkbwriter(self):
 
         # These tests will fail on 3.0.0 because of a bug that was fixed in 3.1:
         # http://trac.osgeo.org/geos/ticket/216
-        if not geos_version_info()['version'] == '3.0.0':
+        if not geos_version_info()['version'].startswith('3.0.'):
             # Now setting the output dimensions to be 3
             wkb_w.outdim = 3