Stopped hiding the original exception's message when a selenium driver's instantiation fails.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17575 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/tests.py

@@ -18,9 +18,9 @@ class AdminSeleniumWebDriverTestCase(LiveServerTestCase):
             mod = import_module(module)
             WebDriver = getattr(mod, attr)
             cls.selenium = WebDriver()
-        except Exception:
+        except Exception, e:
             raise SkipTest('Selenium webdriver "%s" not installed or not '
-                           'operational.' % cls.webdriver_class)
+                           'operational: %s' % (cls.webdriver_class, str(e)))
         super(AdminSeleniumWebDriverTestCase, cls).setUpClass()
 
     @classmethod