ar_unpack

Also lots of moving around, new files fpac and endianess,
as otherwise there would be code copying.

ar_unpack currently gets all the segments from the binfile,
but I have no idea if theres some compression/crypting
included.
Stand-alone puff library for inflate algorihtm.

BD data file was partially compressed with DEFLATE.
Puff is easy to use and has permissive license.
ar unpack DEFLATE decompression support.

Went throught the whole BD, seems to work okayish.