Add workdir feature to release scripts.

tools/push-to-trunk/test_scripts.py

 #!/usr/bin/env python
 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 949 matching lines @@
       Cmd("git tag 3.22.5 hsh_to_tag", ""),
       Cmd("git push https://chromium.googlesource.com/v8/v8 3.22.5", ""),
       Cmd("git checkout -f some_branch", ""),
       Cmd("git branch -D %s" % TEST_CONFIG["BRANCHNAME"], ""),
       Cmd("git branch -D %s" % TEST_CONFIG["TRUNKBRANCH"], ""),
     ]
     self.Expect(expectations)
 
     args = ["-a", "author@chromium.org", "--revision", "push_hash",
             "--vc-interface", "git", "-f", "-r", "reviewer@chromium.org",
-            "--svn", svn_root, "--svn-config", "[CONFIG_DIR]"]
+            "--svn", svn_root, "--svn-config", "[CONFIG_DIR]",
+            "--work-dir", TEST_CONFIG["DEFAULT_CWD"]]
     PushToTrunk(TEST_CONFIG, self).Run(args)
 
     cl = FileToText(TEST_CONFIG["CHANGELOG_FILE"])
     self.assertTrue(re.search(r"^\d\d\d\d\-\d+\-\d+: Version 3\.22\.5", cl))
     self.assertTrue(re.search(r"        Log text 1 \(issue 321\).", cl))
     self.assertTrue(re.search(r"1999\-04\-05: Version 3\.22\.4", cl))
 
     # Note: The version file is on build number 5 again in the end of this test
     # since the git command that merges to the bleeding edge branch is mocked
     # out.
@@ skipping 859 matching lines @@
 
 Review URL: https://codereview.chromium.org/83173002
 
 ------------------------------------------------------------------------""")
     self.assertEquals(
 """Prepare push to trunk.  Now working on version 3.23.11.
 
 R=danno@chromium.org
 
 Committed: https://code.google.com/p/v8/source/detail?r=17997""", body)