deal with firmware that does not set the 'vram' property on the tcx's node

Don't directly use assignments in if (), but add the commonly accepted
explicit pair of parenthesis.

provide driverFunc()
now this works with xorg 1.18

XFree86LOADER is officially no longer optional ( and we didn't treat it as
optional for quite some time ) so start nuking it

mibstore.h and its miInitializeBackingStore() have been otherwise empty
since at least xorg-server 1.10. remove all reference to them as the
header is gone in xorg-server 1.18.

if the hardware supports stipples with ROPs, use them
while there, downgrade some config output from X_ERROR to X_PROBED

detect and (attempt to) deal with 8bit TCX with 2MB VRAM
TODO: get one of these VRAM modules...

make this work properly on 8bit SUNW,tcx

merge xf86-video-suncg14 1.1.2, xf86-video-suncg6 1.1.2,
xf86-video-sunffb 1.2.2, xf86-video-suntcx 1.1.2 and xf86-video-sunleo 1.2.1

XXX: these might need more help

unmap THC when we mean THC, remove spurious return in CloseScreen()

#include <sys/ioctl.h>

Support acceleration on 8bit TCX. This is untested for lack of hardware.

add acceleration support, make hardware cursor work, etc.
the acceleration code will not work on 8 bit TCX yet.

Sun TCX/S24 driver, version 1.1.1
from Xorg