fix wacom hotplug and all Intuos 5 issues

- drop custom config:
  (please wacom using folks review this part and think
  about how to get it back if its important to you)

- put default config shipping with  xf86_input_wacom
  into /etc/X11/xorg.conf.d/
  which seems to be interpreted again when
  devices are hot plugged

- when starting x11, also provide xinput
  .. you never know when you need it

This fixes all problems I had:
- device only worked when plugged in, then xorg was started
(an alternative quick fix is switching to terminal by ctrl-alt-F1 and back)
- I had to disable some devices, because eg myaint switched input
device many times a sec rendering it unusable otherwise, some of those devices
configured did not work.

Details:
http://sourceforge.net/apps/mediawiki/linuxwacom/index.php?title=FAQ#Is_hotplugging_supported_for_my_USB_tablet.3F
See 12 -> HAL or xorg.conf.d
Supybot/limnoria: add service module
qemu-vm: Add new option writableStoreUseTmpfs.

This is to use the VMs own disk image instead of a tmpfs in order to
avoid eating more memory. Of course, by default we still use the tmpfs
in order to not break existing VM tests.

I personally don't like the coding style of the option definition, but
in order to stay consistent, I followed the overall style in this file.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
lightdm: remove unused reference to mesa drivers

I don't need them and llvm at all, for example.
Supybot service: failing to create stateDir in /var/lib
supybot.service: tidy up
Merge branch 'supybot'

Conflicts:
	modules/misc/ids.nix
Merge pull request #210 from cillianderoiste/master

Add Supybot (IRC bot) service
Add iodined, ip over dns daemon
Merge pull request #211 from offlinehacker/iodined

Add iodined, ip over dns daemon
Style fix
Increase memory for the VirtualBox image generator
KDE: fix config build when grub is used to generate boot menu, but isn't used as a loader.
Add NixOS Manual build instructions to itself.
nixos-checkout: fix output if ran with no options, -h and --help. Other options will still trigger
mkdir output :(
nixos-checkout: let it run without args again.
Manual: improve source checkout section
Merge pull request #154 from MarcWeber/submit/x11-wacom-intuos5-fix

fix wacom hotplug and all Intuos 5 issues
compiz: Disable

It doesn't currently work.
nix-daemon: Run under the default nice level

Running at a low priority is generally bad since it runs the risk of
priority inversions, etc.  It's really the builders that should run
under a different priority (e.g. in their own cgroup).