[NTOS]: Rewrite boot driver loading code (not the driver code itself) to use the...

[NTOS]: Rewrite boot driver loading code (not the driver code itself) to use the boot loader's BootDriverListHead, instead of parsing InOrderListHead and cherry-picking ".sys" files. This is the last incompatibility with Windows.
[NTOS]: Use group prioritiy, tag numbers, and tag priority to determine the correct loading order for boot drivers, instead of just parsing the linked list. Dependencies work now!
[NTOS]: Load any DLLs that are driver-dependent with MmCallDllInitialize. Previously, these .DLLS were ignored and drivers could lose dependencies.

svn path=/trunk/; revision=46690