* Remove one time inclusions from the main header and put them back where they belong.
* Improve the GUIDs situation.
* Improve header inclusions.
CORE-7716
svn path=/trunk/; revision=61946
[CDROM]: Add Windows Server 2003 DDK Cdrom Sample, under the license and terms of the Windows Server 2003 DDK.
They both build and run fine, but PCIIDE(x) must be completed/enabled, and atapi must be rewritten to be WDM-compliant.
svn path=/trunk/; revision=49171