CARD32 might not be an int, so cast explicitly to uint32_t and print
that correctly.

include config.h #ifdef HAVE_CONFIG_H

partial port to xorg-server 1.18. both cg6 and ffb need more help.

- move some routines used by both XAA and EXA to their own file
- enable hardware prefetch when reading from video memory - now blits in EXA
are no longer slower than in XAA
- start fleshing out Xrender routines

add basic EXA support