mxcl/homebrew — pull request #13292 by samueljohn (2012-07-09 16:01:00+00:00)
Title: ENV: remove -L from CFLAGS.

SDK/usr/include and lib now appended instead of prepended.
Prepending overwrote our precedence of HOMEBREW_PREFIX/include and lib.

This fixes #13225 and I can compile ruby now on a xcode_only system.