ZArc (Alternative of Freearc)

[Razor12911]

Tried to fix some bugs and preparing for SFX (Self extractor) function for split and non-splitted archives.

The preparation of this means the first archive size differs from the rest, in this case, first split must be 195MB (Imaginary SFX is 5mb) and the rest is 200MB.

No compression is applied, testing store method which is the default method which comes with ZArc, otherwise things like srep, lzma are things which you can add by yourself because of copyright.

The other reason this is store compression is split archives are a headache (bugs everytime I use other compressors), I have to prepare something before everything works.

Progress: 65%

Things left to do:
Fix split archive bugs
Solid block feature
Add non stdin and/or stdout support
Make ZArc show progress
Command line version
GUI version