Removed the ExpertColor S3 Vision868 card;
Rewritten the ICD2061 clock chip and moved the Diamond Stealth 32 back to the main branch as it's now fixed;
Fixed the Y offset of the 64x64 hardware cursor of the Cirrus Logic cards.
Added internal graphics card option for the Intel Advanced/EV for the on-board S3 Trio64;
Fixed configuration for internal graphics card options (using the machine's Configure button) for some machines (PCjr, Tandy 1000, Tandy 1000 HX, and now also the Intel Advanced/EV).
The Settings dialog now correctly filters devices by bus;
Split the dual VLB/PCI graphics cards into VLB and PCI versions;
Device filtering is now done using the new device_is_valid() call that compares device flags to machine flags;
Moved the NCR-based SCSI controllers to the main branch;
Moved the NE1000 to the dev branch until it's finished.
