Sort tests to increase predictability of mozilla test runs...

test/mozilla/testcfg.py

Index: test/mozilla/testcfg.py
===================================================================
--- test/mozilla/testcfg.py	(revision 3211)
+++ test/mozilla/testcfg.py	(working copy)
@@ -103,6 +103,7 @@
         for excluded in EXCLUDED:
           if excluded in dirs:
             dirs.remove(excluded)
+        dirs.sort()
         root_path = root[len(self.root):].split(os.path.sep)
         root_path = current_path + [x for x in root_path if x]
         framework = []
@@ -113,6 +114,7 @@
           if exists(script):
             framework.append(script)
         framework.reverse()
+        files.sort()
         for file in files:
           if (not file in FRAMEWORK) and file.endswith('.js'):
             full_path = root_path + [file[:-3]]