Nano-X, NXlib, MicroWindows library

There are one open-source implementation of X11 API for DOS. It is called "NXlib". But it was compiled on DJGPP, not on EMX. So I need to recompile.

Also it needs some specific functions from DJGPP. I toke them from libc source and moved into separate library. This works.

Compiling of NanoX for DOS also works. But linking of final executable don't work, because it signals about lot of unresolved imports. This need to be fixed. But I don't know - how? Requested functions are already implemented. Problem is connected with wrong linking maybe, but I don't know exactly.