Changed the debian control file to remove packages that aren't valid
for 14.04/Mint 17. Updated some of the dependencies.

Use bundler now.

Added "-strict experimental" after the audio codec. The position of
"-strict experimental" is important and has to be after the "-i".
It's also needed for the re-encoding.
I believe that the codecs have changed, so I had to update the baseline
test file.

Also, mkvmerge no longer works. It may never have worked, actually.
Regardless, one test case is still failing, because I need to recreate
the baseline files and the input files.

I'm checking in anyway, because I want to change the parameters for
capturing the files in the first place, before I create the new baseline
files.