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.
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.
