Remove dictionnary comprehensions to be compatible with Python 2.6

eopayment/__init__.py

@@ -31,7 +31,7 @@ def get_backends():
           'Dummy payment backend'
 
     '''
-    return {backend: get_backend(backend) for backend in __BACKENDS}
+    return dict((backend, get_backend(backend)) for backend in __BACKENDS)
 
 class Payment(object):
     '''

eopayment/ogone.py

@@ -508,7 +508,7 @@ class Payment(PaymentCommon):
 
     def response(self, query_string):
         params = urlparse.parse_qs(query_string, True)
-        params = {key.upper(): params[key][0] for key in params}
+        params = dict((key.upper(), params[key][0]) for key in params)
         reference = params['ORDERID']
         transaction_id = params['PAYID']
         status = params['STATUS']