depend on ZODB 4 branch of AccessControl

buildout.cfg

@@ -23,6 +23,7 @@ parts =
     wsgi
 sources-dir = develop
 auto-checkout =
+    AccessControl
     Products.BTreeFolder2
     Products.ExternalMethod
     Products.ZCatalog

sources.cfg

@@ -7,7 +7,7 @@ github_push = git@github.com:zopefoundation
 
 [sources]
 # Zope2-specific
-AccessControl = git ${remotes:github}/AccessControl pushurl=${remotes:github_push}/AccessControl
+AccessControl = git ${remotes:github}/AccessControl pushurl=${remotes:github_push}/AccessControl branch=tomgross-zodb4
 Acquisition = git ${remotes:github}/Acquisition pushurl=${remotes:github_push}/Acquisition
 DateTime = git ${remotes:github}/DateTime pushurl=${remotes:github_push}/DateTime
 DocumentTemplate = git ${remotes:github}/DocumentTemplate pushurl=${remotes:github_push}/DocumentTemplate