this is important, as if you want to run the TestBot in the bwmirror project
directly from an IDE, the dlls and bwta data files are not being extracted
from a JAR file and the extraction would fail. this method is a fair bit more
robust and will automatically handle those differences.
in addition, using System.load instead of System.loadLibrary to load
the bwapi_bridge native library. this allows us to stop doing that hacky
reflection thing to reset the java.library.path property and just pass in
an absolute path to bwapi_bridge.dll