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.)
Merge branch 'master' of git://github.com/mxcl/homebrew