flann 1.8.2

Closes #16724.
exempi: note that patch has been merged upstream
pxz: requires openmp, not available in clang

Closes #16227.
superenv: favor /opt/X11 over /usr/X11 when both exist

This is the order of precedence used elsewhere in Homebrew when
detecting X11 versions and prefixes.

Fixes #16598.
GnuTLS2 2.12.21

Adding GnuTLS 2.x
GnuTLS 3.x changed the API slightly, but also changes license terms,
so it is unlikely that some software will update to newer versions.

Closes #17109.
Wireshark: link against GnuTLS 2

Closes #16257.
mutt: remove unused flag
rbenv-bundler: fix updated 0.95 tag.
mjpegtools: depend on X11 if installed.

Closes #17222.
mpegdemux 0.1.4

Closes #17223.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Remove xml2rfc.

xml2rfc is now installable via pip.

Closes #17227.
libuv 0.9.7

Closes #17226.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
gsutil 3.21

Closes #17225.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
plenv 1.1.0

Closes #17220.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
byobu 5.29

Signed-off-by: Dustin Kirkland <kirkland@byobu.co>
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
byobu works *much* better with tmux than screen

Closes #17221.

Signed-off-by: Dustin Kirkland <kirkland@byobu.co>
Closes #17221.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
rhash: add Lion requirement

Closes #17132.
zbar: depends on :x11
libodbc++ 0.2.5

Closes #17224.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
sbcl: add update notice for maxima

Closes #17218.

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