superenv cc: specify llvm-g++-4.2

We previously tried to call llvm-g++ under the name `g++`,
but this is now a link to clang on Xcode 5+.

Fixes #20691.
Clarify ENV.gcc, ENV.llvm c++ compiler names
python: clean up LINKFORSHARED inreplace

Fixes #20860.
Ipv6calc 0.94.1

Closes #20862.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Add an exception for imagemagick in build-time dep audit
libstfl: swig is a build-time dep
ruby-build 20130628

Closes #20867.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
aubio: fix audit
aubio: fix more audit warnings
ruby-build: fix sha1
ghostscript: fix typo

Also use std env when djvu is requested.

Closes #20787.
brew --env: Add missing CPATH environment variable

Closes #20813.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
dmd: add a conf and test

Closes #20687.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Merge branch 'master' of http://github.com/mxcl/homebrew