lit: Fix a name lookup problem, which only occurred on a race condition. This is

why dynamic binding sucks.

llvm-svn: 77773

clang/utils/test/TestRunner.py

@@ -1,4 +1,3 @@
-import errno
 import os
 import platform
 import re

clang/utils/test/Util.py

@@ -1,4 +1,4 @@
-import os, sys
+import errno, os, sys
 
 def warning(msg):
     print >>sys.stderr, '%s: warning: %s' % (sys.argv[0], msg)