[PATCH 00/28] vmwgfx preparation for GL3

This patch series does some reorganization and preparation for the upcoming GL3 functionality.

* Reworks device initialization * Adds command buffer support, replaces the old FIFO ring * Adds screen target support, a new interface to assign "scanouts" * Adds a simple implementation of fbdev on kms. At some point we should however consider moving the KMS code to use the helpers.

I've already sent out a pull request for a part of this patchset.