fftw: update 3.3.4 bottle.
gdal: update 1.11.1_1 bottle.
libgetdata: update 0.8.5 bottle.
libxc: update 2.2.0 bottle.
open-mpi: update 1.8.3 bottle.
snow 20130616 (new formula)

New Formula for SNOW. Useful little hidden encrypted messages in
whitespace tool.

Closes #33925.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
snow: add 20130616 bottle.
aescrypt-packetizer 3.0.9 (new formula)

Closes #32846.
aescrypt-packetizer: add 3.0.9 bottle.
idris 0.9.15.1
idris: add 0.9.15.1 bottle.
mat: general cleanup.

Modernizes the MAT formula a little, especially around the handling of
the Python elements.

Closes #33923.
mat: add 0.5.2 bottle.
youtube-dl 2014.11.04

youtube-dl: update to 2014.11.04

Closes #33958.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
youtube-dl: update 2014.11.04 bottle.