merge xorg-server 21.1.18.

merge xorg-server 21.1.16.

merge xorg-server 21.1.14.

merge xorg-server 21.1.13.

merge xorg-server 21.1.9.

updates for xorg-server 21.1.8.

merge xorg-server 21.1.7.

merge xorg-server 21.1.6.

merge xorg-server 1.21.1.5

update for xorg-server 21.1.4.

update these for xorg-server 21.1.3.

updates for xorg-server 1.20.13.

merge xorg-server 1.20.12 and xkeyboard-config 2.33.

update for xorg-server 1.20.11.

bump version for xorg-server 1.20.10.

update version here too.

merge xorg-server 1.20.5.

merge xorg-server 1.20.4.

revert some of the previous update to xorg-server 1.20. i forgot
that some of them were moved into makefiles so that Xx68k could
build without them being defined.

disable local reallocarray() for now.

merge xorg-server 1.20.3.

PR/51494: Rin Okuyama: Fix MKINET6=no build.

move some flags from dix-config.h into X11FLAGS.DIX

update for xorg-server 1.18.4.

update for xorg-server 1.10.6.

finish updating these for xorg-server 1.10.3

updates for xorg-server 1.10.3.

updates for xorg-server 1.9.5

update these for xorg-server 1.9.2

update for xorg-server 1.6.5

update for xorg-server 1.6.3.

update these for xorg-server 1.6.2.

update these with xorg-server 1.6.1.901 versions.

use _LP64 pre-processor macro instead of a list of 64 bit platforms.

add a bunch of generated files.

XXX mknative-xorg!