Correct datetime queries for DBDataRef and DBDataCRef classes.

This ensures datetime values used in the WHERE block for referenced and
crossreferenced database tables are properly made timezone naive.

mythtv/bindings/python/MythTV/database.py

@@ -529,9 +529,14 @@ def __init__(self, where, db=None, bypass=False):
         self._setClassDefs(self._db)
         if bypass: return
 
-        self._refdat = where
         self._populated = False
 
+        where = list(where)
+        for i,v in enumerate(where):
+            if isinstance(v, datetime):
+                where[i] = v.asnaiveutc()
+        self._refdat = tuple(where)
+
     def _populate(self, force=False, data=None):
         if self._populated and (not force):
             return
@@ -681,9 +686,14 @@ def __init__(self, where, db=None, bypass=False):
         self._setClassDefs(self._db)
         if bypass: return
 
-        self._refdat = list(where)
         self._populated = False
 
+        where = list(where)
+        for i,v in enumerate(where):
+            if isinstance(v, datetime):
+                where[i] = v.asnaiveutc()
+        self._refdat = tuple(where)
+
     def _populate(self, force=False, data=None):
         if self._populated and (not force):
             return