Rewrite more instances of the deprecated Transaction_object.begin().

Caution:  Since no deprecation warnings about Transaction.begin()
were raised by the test suite before this patch, none of this code
is exercised by the test suite -- or it is, but "something"
suppresses the deprecation warnings.  So it's hard to claim that
this patch has been tested; the strongest claim I can make is that
all the unit tests still pass.

lib/python/App/RefreshFuncs.py

@@ -17,6 +17,7 @@ $Id$
 
 import os, sys
 from time import time
+import transaction
 import Products
 from ExtensionClass import Base
 from Globals import PersistentMapping
@@ -321,7 +322,7 @@ def autoRefresh(jar):
         Connection.resetCaches()
         get_transaction().commit()
         jar._resetCache()
-        get_transaction().begin()
+        transaction.begin()
 
 def setupAutoRefresh(jar):
     # Install hook.

lib/python/Testing/ZopeTestCase/ZopeTestCase.py

@@ -19,6 +19,7 @@ import unittest
 import utils
 import profiler
 
+import transaction
 from AccessControl import getSecurityManager
 from AccessControl.SecurityManagement import newSecurityManager
 from AccessControl.SecurityManagement import noSecurityManager
@@ -85,7 +86,7 @@ class ZopeTestCase(profiler.Profiled, unittest.TestCase):
            at the start of setUp(). By default begins
            a new transaction.
         '''
-        get_transaction().begin()
+        transaction.begin()
 
     def beforeClose(self):
         '''Called before the ZODB connection is closed,

lib/python/Testing/ZopeTestCase/testPortalTestCase.py

@@ -15,6 +15,7 @@ import os, sys
 if __name__ == '__main__':
     execfile(os.path.join(sys.path[0], 'framework.py'))
 
+import transaction
 from Testing import ZopeTestCase
 
 from Acquisition import aq_base
@@ -69,7 +70,7 @@ class TestPortalTestCase(ZopeTestCase.PortalTestCase):
         # with an empty fixture.
         self._called = []
         # Implicitly aborts previous transaction
-        get_transaction().begin()
+        transaction.begin()
 
     def beforeSetUp(self):
         self._called.append('beforeSetUp')

lib/python/Testing/ZopeTestCase/testZopeTestCase.py

@@ -15,6 +15,7 @@ import os, sys
 if __name__ == '__main__':
     execfile(os.path.join(sys.path[0], 'framework.py'))
 
+import transaction
 from Testing import ZopeTestCase
 
 from Acquisition import aq_base
@@ -44,7 +45,7 @@ class TestZopeTestCase(ZopeTestCase.ZopeTestCase):
         # with an empty fixture.
         self._called = []
         # Implicitly aborts previous transaction
-        get_transaction().begin()
+        transaction.begin()
 
     def beforeSetUp(self):
         self._called.append('beforeSetUp')

lib/python/ZPublisher/Publish.py

@@ -15,6 +15,7 @@ __doc__="""Python Object Publisher -- Publish Python objects on web servers
 $Id$"""
 
 import sys, os
+import transaction
 from Response import Response
 from Request import Request
 from maybe_lock import allocate_lock
@@ -298,9 +299,12 @@ def get_module_info(module_name, modules={},
 
 
 class DefaultTransactionsManager:
-    def begin(self): get_transaction().begin()
-    def commit(self): get_transaction().commit()
-    def abort(self): get_transaction().abort()
+    def begin(self):
+        transaction.begin()
+    def commit(self):
+        get_transaction().commit()
+    def abort(self):
+        get_transaction().abort()
     def recordMetaData(self, object, request):
         # Is this code needed?
         request_get = request.get

lib/python/Zope/App/startup.py

@@ -22,6 +22,7 @@ from types import StringType, ListType
 from zExceptions import Unauthorized
 from zLOG import LOG, WARNING, INFO, BLATHER, log_time
 from ZODB.POSException import ConflictError
+import transaction
 import AccessControl.User
 import App.FindHomes
 import ExtensionClass
@@ -213,8 +214,8 @@ def zpublisher_exception_hook(published, REQUEST, t, v, traceback):
 class TransactionsManager:
     def begin(self,
               # Optimize global var lookups:
-              get_transaction=get_transaction):
-        get_transaction().begin()
+              transaction=transaction):
+        transaction.begin()
 
     def commit(self,
               # Optimize global var lookups: