Move libcxx/test/libcxx python package into libcxx/utils/libcxx.

This patch merges the test python package with the newly
created package in utils.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@294651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lit.cfg b/test/lit.cfg
index eee17fd..c54f0a0 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -3,7 +3,7 @@
 import os
 import site
 
-site.addsitedir(os.path.dirname(__file__))
+site.addsitedir(os.path.join(os.path.dirname(os.path.dirname(__file__)), 'utils'))
 
 
 # Tell pylint that we know config and lit_config exist somewhere.