[BOOT:LIB] More initialization and cleanup

Started BlpMmDestroy(), MmMdDestroy(), MmPaDestroy(),
EfiSetWatchdogTimer(), EfiOpenProtocol(), EfiConInExSetState(), and
BlDestroyLibrary().
Completed BlpFwInitialize().
Improved InitializeLibrary().

BOOT/ENVIRON/LIB/MM/mmmd.c

@@ -885,6 +885,35 @@ Return Value:
     return Descriptor;
 }
 
+NTSTATUS
+MmMdDestroy (
+    )
+
+/*++
+
+Routine Description:
+
+    Cleans up after any actions performed by the memory descriptor manager.
+    After calling this, the memory descriptor manager can no longer be used.
+
+Arguments:
+
+    None.
+
+Return Value:
+
+    STATUS_SUCCESS.
+
+--*/
+
+{
+    //
+    // TODO: Implement this routine.
+    //
+
+    return STATUS_SUCCESS;
+}
+
 VOID
 MmMdInitialize (
     IN ULONG Stage,