xorg-server: update to 1.16.0.

Major update with the following features for void:

- systemd build option enabled by default.
- the X suid wrapper has been moved to the -wrapper subpkg, only required by
  the non KMS drivers (catalyst, nvidia, others).
- glamor enabled by default on x86.
- xwayland enabled by default.
xf86-input-evdev: rebuild against xorg-server-1.16.
xorg-server: update for removed build options.
xf86-video-intel: rebuild against xorg-server-1.16.
xf86-video-ati: rebuild against xorg-server-1.16.
xf86-video-ati: depends on xserver-abi-video-18_1.
xorg-server: update a comment: glamor is disabled for now.
base-files: create a generic udev rules file to set proper perms to the input subsystem.
Merge branch 'master' of github.com:voidlinux/xbps-packages
xorg-server: merge -wrapper; does not do any harm if it's always there.
xf86-input-joystick: rebuild against xorg-server-1.16.
xf86-input-synaptics: rebuild against xorg-server-1.16.
xf86-input-vmmouse: rebuild against xorg-server-1.16.
xf86-input-wacom: rebuild against xorg-server-1.16.
xf86-video-cirrus: rebuild against xorg-server-1.16.
xf86-video-fbdev: rebuild against xorg-server-1.16.
xf86-video-fbturbo: rebuild against xorg-server-1.16.
xf86-video-geode: rebuild against xorg-server-1.16.
xf86-video-modesetting: rebuild against xorg-server-1.16.
xf86-video-nouveau: rebuild against xorg-server-1.16.