[BOOT:MM] Begin work on memory manager

BOOT/ENVIRON/APP/BOOTMGR/bootmgr.c

@@ -44,6 +44,7 @@ Return Value:
     HANDLE DataStore;
 
     LibraryParameters.Flags = 0;
+    LibraryParameters.MinimumPageAllocation = 16;
 
     //
     // Initialize the boot library.