Warzone 2100 Graphic Mods tools

A little more info in the README, including a reminder
to RESET YOUR KEYMAP. Thanks, vexed!

Fix crash related to OpenAL threading by making the audio temp
buffer static rather than dynamic.

Move console prints for video dump start and end to before and
after the dump starts to minimise the time the msgs appear on-screen.

just a little cleanup. no functional changes.

New version of the video dumper - now with SOUND!
wzencode.py script updated with ffmpeg audio commands.

For audio to work, you must set the capture device on your mixer to
capture game sound. (default is normally the microphone)

Since there are new source files, you will need to do the whole
./autogen.sh && ./configure && make
routine after updating.

add option parser and help option to script

Tune up base animation and relay animations in pie files
Edit textures for same.

Editing pie and texture to add animation to base plate.
Found pie base plates to have extra poly not needed removed.

editing base plate for relay centre

Adding a new packdrop9.png
Editing command relay centre texture and pie

Edit texture on relay centre to be cleaner and alpha panels to work