[BOOTMGFW]:

[BOOTMGFW]:
- Implement case in BlMmRemoveRegionFromMdlEx where the descriptor's tail (or entire allocation) is contained in the descriptor -- this covers our BootMgr entry.
- Implement some more initialization functions.
- Start implementing the heap allocator initialization code. Now we need to implement the actual page allocator.

svn path=/trunk/; revision=69059