ffmpeg 2.4.4

Closes #34610.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ffmpeg: update 2.4.4 bottle.
Remove unused entries from test/.gitignore
Fix duplicated test methods
tbb 4.3-20141023

It seems that manually setting the compiler and architecture is no
longer necessary.
tbb: update 4.3-20141023 bottle.