mxcl/homebrew — pull request #15492 by morrifeldman (2012-10-16 19:50:41+00:00)
Title: Update fails_with for Xcode 4.5.1, build 421

kyoto-cabinet fails_with clang. The failure is still true in Xcode
4.5.1, build 421 under Mountain Lion 10.8.2. This patch updates the
fails_with code from 318 to 421.