All devices now have the bus marked in their name;

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.

src/video/vid_et4000w32.h

@@ -1 +1,2 @@
-extern device_t et4000w32p_device;
+extern device_t et4000w32p_vlb_device;
+extern device_t et4000w32p_pci_device;