keymap: Remap microphone mute and touchpad toggle for Lenovo U300s

Separate out Ideapad U300s to its own line and add Microphone mute key.

Signed-off-by: Martin Pitt <martinpitt@gnome.org>
Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
libudev: do not resolve $attr{device} symlinks

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
libudev: update to 199

This updates the library codebase to upstream version 199.

Authors:
		Kay Sievers
		Thomas Hindoe Paaboel Andersen
		Hannes Reinecke
		Jan Engelhardt

See http://cgit.freedesktop.org/systemd/systemd/log/src/libudev

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>