Replace bulk of uses of 'zLOG' with equivalent Python 'logging' modul…

…e usage.

Exceptions:

  - 'ZServer' code which uses the 'register_subsystem' stuff.

  - Code which imports custom log levels (BLATHER, TRACE), now pulled from
    'zLOG.EventLogger'.

  - Test jigs which play with zLOG's 'write_log'.

  - Usage in 'svn:externals' modules (ZODB, etc.)

TemporaryStorage.py

@@ -21,8 +21,10 @@
 """
 
 __version__ ='$Revision: 1.1.2.2 $'[11:-2]
+import logging
+logger = logging.getLogger('TemporaryStorage')
 
-from zLOG import LOG, BLATHER
+from zLOG.EventLogger import CUSTOM_BLATHER
 from ZODB.serialize import referencesf
 from ZODB import POSException
 from ZODB.BaseStorage import BaseStorage
@@ -182,7 +184,7 @@ def store(self, oid, serial, data, version, transaction):
         if version:
             # we allow a version to be in use although we don't
             # support versions in the storage.
-            LOG('TemporaryStorage', BLATHER,
+            logging.log(CUSTOM_BLATHER,
                 ('versions in use with TemporaryStorage although Temporary'
                  'Storage doesnt support versions'),
                 )