mxcl/homebrew — pull request #13511 by samueljohn (2012-07-20 16:04:22+00:00)
Title: libxml2: Fix Python bindings for Xcode-only

- Since libxml2 is a dupe, we have to assure to link against it and not system's python.
- Unless the CLT are present, apply a patch for the linking step.
- Help libxml2/python/setup.py to find libiconv headers.