(svn r13512) [NoAI] -Fix: don't load a library over and over, but keep track of which libraries we have loaded (per AI) and re-use it where possible (reduces memory-footprint)
[NoAI] -Fix: change the fake-library-name-counter to a per AI value, not global
[NoAI] -Fix: Load the script inside the thread, not in the main thread. This avoids unneeded error-handling