* utils/hbmk2/hbmk2.prg
* utils/hbmk2/hbmk2.hbm
* utils/hbmk2/Makefile
+ Added experimental support for multithreaded compilation.
Enable with -jobs=<x>.
Currently Harbour compilation phase supports MT.
If it works out well and details are polished, the same
can be implemented for C/resource compilation phases, too.
I'd appreciate of someone with MT experiences could review
current code and spot bugs/problems with it before I go
any further.
* Changed to build hbmk2 in MT mode.