Allowed ChangeThreadPriority to change the current thread's priority by passing 0 as the thread ID.
Added basic support for message boxes.
Stop counting arguments when loading a module if we find an empty one.
Minor cleanup.
git-svn-id: http://svn.purei.org/purei/trunk@963 b36208d7-6611-0410-8bec-b1987f11c4a2