bitchx: add mirror

Closes #31119.
gst-plugins-good: add optional dependency libpng

Closes #31269.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
datamash 1.0.6 (new formula)
datamash: add 1.0.6 bottle.

Closes #31252.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
neo4j 2.1.3

Closes #31271.
udpxy 1.0.23-9 (new formula)
udpxy: add 1.0.23-9 bottle.

Closes #31255.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Handle tap file renames that remove a file from the formula directory
Reduce direct accesses of the args collection
Make options available on the spec objects
Hide the options data structure better
emacs: add optional mailutils dependency

The Homebrew Mailutils is more powerful than the version which comes
with Emacs.  This option allows the user to install Homebrew's version
instead.

Closes #31219.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
node 0.10.30

Closes #31273.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
node: update 0.10.30 bottle.
gcc: remove with-profiled-build option

It doesn't work, inside or outside of Homebrew. The option is still
available in the homebrew-versions gcc, though.

Closes #31261.
libxml2: fix opportunistic linking against liblzma

Fixes #30126.
libuv 0.11.27 (devel)

Closes #31277.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
add helpers for formula tests
show cmd being executed
use test helpers