Upgrading libjpeg-turbo to 1.2.0

This is required for VirtualGL
Adding VirtualGL package
Adding bbswitch for Optimus power management
Adding bumblebee package
Adding nvidia-kernel-bumblebee
Fixing VirtualGL to not clobber glxinfo
Adding nvidia-driver-bumblebee
Improving the bumblebee package

Setting up bumblebee.conf to reflect the default paths of the
nvidia-*-bumblebee packages.

Added an init script to automatically start the bumblebee daemon at
boot.
Fixing rc.bumblebee