mrms: Add tar support

[marekmaskarinec]

Original issue:

~mrms/tophat#40

Initial message:

Tophat would be able to load tars, which would be used as the res:// directory.

ske

I agree completely. Though .tar is a container type, so we'll have to add different deflation methods like BZip or GZip or LZMA. We can either add all of them, or include specific ones - or - use .zip.

mrms

This wasn't meant as a form of compressing tophat games, but more as a
way to better encapsulate them. I think compression is better
accomplished by distributing the game in a compressed archive.

ske

Oh yeah I see what you mean now, just using the .tar as a container. That makes sense.

ske

Additionally, it'd be useful to have tar.um for any user specific needs.