fixed issue 1129, recapcha message error, thanks Friedrich

VERSION

@@ -1 +1 @@
-Version 2.2.1 (2012-10-31 09:14:53) stable
+Version 2.2.1 (2012-10-31 09:50:32) stable

gluon/tools.py

@@ -769,6 +769,10 @@ class Recaptcha(DIV):
             del self.request_vars.recaptcha_response_field
             self.request_vars.captcha = ''
             return True
+        else:
+            # In case we get an error code, store it so we can get an error message
+            # from the /api/challenge URL as described in the reCAPTCHA api docs.
+            self.error = return_values[1]
             self.errors['captcha'] = self.error_message
             return False