Applied all applicable PCem commits;
The PS/1 and PS/2 machines now have the correct graphics cards - fixes the reference diskettes;
The open dialog code now changes directory to usr_path after the dialog is closed;
Disabled excess logging in the TI SVGA code.
Re-worked the system pathnames (pc.c), renamed cfg_path to usr_path.
Other small things here and there.
Logitech bus mouse re-worked, should be OK now.
If no VM path is specified or the specified VM path is relative, it is now converted to absolute using exe_path;
Fixed saving path for screenshots when using the DirectDraw renderer.
IBM.H is gone, video stuff re-organized. Keyboard stuff reorganized.
Machines that have their own video, mouse and/or keyboard now have all this in their machine file.
Fixed and other cleanups here and there.
Fixed the IDE device detection hang with > 8 GB hard disks;
Rewritten the SMC FDC37C932FR Super I/O chip emulation;
Added an early implementation of the PIIX4, currently not in the makefile because nothing uses it right now.
Changed the CD-ROM capabilities MODE SENSE page a bit;
Applied the S3 Trio and SVGA changes from PCem;
Fixed saving of the video renderer settings;
Fixed DirectDraw full screen;
Fixed crashes on soft reset in full screen.
Fixed the last remaining ATAPI DMA bugs;
Fixed IDE hard disk DMA;
Fixed PIIX bus master DMA read and write;
The Settings dialog now accepts more than 16 heads for IDE hard disks;
Added the IDE READ DMA ALT and WRITE DMA ALT commands;
Reenabled current CHS translation reporting, with bugfixes, hopefully the bugfixes will prevent certain larger hard disks from being detected as 250 MB.
Fixed (hopefully) pass through in the Windows CD-ROM IOCtl code;
Fixed the legacy I/O address handling on the BT-958D, now it behaves correctly - legacy I/O address disabled by default, can be enabled in AutoSCSI (removed the setting from the device config struct);
The BT-958D PCI-configured I/O space now correctly gets 32 ports and not 4.
Fixed MCA write bugs for the AHA-1640 and BT-640;
Fixed a warning in the PC87306 Super I/O chip emulation;
Each renderer now only has a 32-bit blitter - video_blit_memtoscreen_8() now only converts buffer to buffer32 and then calls video_blit_memtoscreen(), 8-bit blitters are now gone.
Fixed the Force 4:3, Enable EGA/(S)VGA overscan, and Scale options;
Fixed a bug regarding register 0 of the SMC FDC37C665 Super I/O chip;
Commented out some excess logging.
