Cleaned up parallel ports.
Reworked serial ports as devices (still need to clean the chipsets..)
Fixed some issues in Makefile.local.
Prepared for the XTA driver.
Reworked the mouse code AGAIN, fixes crashes on some serial mice and the PS/2 mouse.c
Cleaned up win_devconf.c.
Moved the SIO files to a new sio/ folder.
Added the 'version.h'stuff, added Makefile rule to generate the Manifest file for Windows.
Re-worked the About dialog - it now includes more info.
