merge xorg-server 21.1.14.

merge xorg-server 1.20.3.

first merge of netbsd changes. not tested yet.

if the video driver is "vmware" or "vmwlegacy" and no mouse section exists,
use the "vmmouse" input driver instead of "mouse" -- now xorg works properly
in vmware without a config file

import xorg-server 1.9.2. important changes since 1.6.5 include:

- built-in symbol visibility, default not export
- fixes for various crashes
- many fixes for XI2, EXA, dix, render, glx, xkb, EDID, randr, Xv,
resource handling, Xext, vfb, xfree86 / vga and composite support.
- fixes several memory leaks
- many many documentation updates
- record extension enabled
- no longer looks for XF86Config files

initial import of xorg-server-1.6.1.901

initial import of xorg-server-1.4.2