mesa-common.inc
* Settings shared by ALL recipes

mesa-${PV}.inc
* Settings for particular version, mostly checksums and additional patches
* Patches are stored mesa-${PV} dir and -dri and xlib has adjusted FILESPATHPKG

mesa-dri.inc
* Setting shared by ALL dri recipes - defines what is mesa-dri

mesa-xlib.inc
* Setting shared by ALL xlib recipes - defines what is mesa-xlib