Added zpaint - painting tool for ZDE; added zcalc - calculator for ZDE; updated assembly file names from some apps (.asm
-> .s); added support for buttons, input boxes, mouse cursor and bitmap rendering into ZDE's client-app side; all ZDE's
apps should be called *.x; proc_thread_context () was updated; fixed bug in AC'97 driver with wrong mem alocator;
vfs_mmap () was modified for vfs_content_t * use; vfs_cat () was fixed when wrong filename specified; fixed few
functions in vfs.c + cleanup; ps2 driver was updated and fixed - checking for wrong type of PS/2 + cleanup; old memory
manager from lib/mm was deleted - deprecated; cat.c, ls.c, cd.c, cp.c, mkdir.c, rm.c in utils - fixed DPRINT newspace