Universal CLS

[Gupta]

This is more like 4x4 for external compressor, it can directly read settings from arc.ini so no need to create separate ini.
Basically it runs many instances of a compressor to make it multithreaded by dividing uncompressed streams into chunks, can make some compressors like precomp quite fast by simply adding three words in compression string.

arguments (only for compress)
b -> size of the individual block in mb
t -> threads to use

for decompression, it uses maximum thread available (maybe I will add an option if I get enough requests)