[oe] [meta-oe][PATCH 0/2] X initialization refactoring

[Jussi Kukkonen]

This set has a companion set on oe-core, neither set makes much sense
without the other. Cover letters are identical. Please CC both lists
if needed.


Current state:
 * meta-oe and oe-core both provide xserver-nodm-init: the oe-core
   version should already do everything the meta-oe version does, but
   the meta-oe version gets selected by default because of layer
   priority.
 * meta-oe and oe-core provide xserver-common and x11-common:
   x11-common files are essentially a subset of xserver-common files.


Goals:
 * Adding meta-oe to bblayers alone should not modify X initialization
 * meta-oe and oe-core should not duplicate content without reason
 * xserver startup should still be modifiable from other layers
   (just not implicitly)


What was done to achieve those goals:
 * (oe-core) Removed old cruft from x11-common. What was left is
   Xsession and a few Xsession scripts.
 * (oe-core) Merged what's left of x11-common into xserver-nodm-init
 * (meta-oe) Removed xserver-nodm-init-2.0 as unneeded
 * (meta-oe) No longer install files in xserver-common that oe-core
   xserver-nodm-init installs


xserver-common now has to be explicitly installed if it is wanted.

There are multiple ways to solve these issues: I'm prepared to try
alternative approaches if needed. Testing results are appreciated
as well.


Cheers,
 Jussi