mp4v2: revert to 1.9.1

mediatomb (and possibly other software) does not build against mp4v2 2.0.0
mediatomb: add deps, fix build

Fixes #17999.
Closes #18451.
Closes #19445.
Closes #20759.
Closes #20838.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
mp4v2: fix audit
RabbitMQ 3.1.3

Also, move to standalone bundle tarball.

Closes #20848.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Fix :gzip_only extraction

gunzip can only extract files in-place, so just shelling out to
gunzip was actually leaving the uncompressed file in Homebrew's cache,
not in the temporary directory. (It also destroyed the original
compressed file.)
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>
xctool 0.1.5

Closes #20881.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
matlab2tikz 0.4.0

Closes #20876.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>