fixed GAE contains,issue 874, thanks Howesc

VERSION

@@ -1 +1 @@
-Version 2.00.0 (2012-07-04 19:22:37) dev
+Version 2.00.0 (2012-07-04 22:47:22) dev

gluon/dal.py

@@ -4104,7 +4104,7 @@ class GoogleDatastoreAdapter(NoSQLAdapter):
     def CONTAINS(self,first,second):
         if not first.type.startswith('list:'):
             raise SyntaxError, "Not supported"
-        return [GAEF(first.name,'=',self.expand(second,first.type[5:]),lambda a,b:a in b)]
+        return [GAEF(first.name,'=',self.expand(second,first.type[5:]),lambda a,b:b in a)]
 
     def NOT(self,first):
         nops = { self.EQ: self.NE,