Fixed ET4000/W32p clock (for non-Diamond variants) and banking extension;
Brought the code on par with the mainline;
Fixed names of the two Cardex ET4000/W32p variants per the BIOS'es;
Brought ET4000AX unknown RAMDAC back in line with the mainline (reverted bogus "fix" by Win9xFan);
Made 15bpp and 16bpp colors more accurate.
Uncommented auto-setting FDC data rate to 250 kbps on non-AT machines; fixes floppies on IBM PC and XT and clones;
Removed flto flag from the makefiles, should speed up compile times and make the XT and earlier machines work again;
Removed CGA brown and color burst settings in line with mainline PCem.
