put sources into okra-with-sim-resources.jar
delete temporary hsail and .o files
separate temp dir loading into OkraSimLoader class, build separate jar for source files
LibraryLocator.getPath interface so that native lib can actually be loaded by OkraContext, also name change to OkraResourceExtractor
fix up source jars organization
resources are OS-specific; better handling of case where not found
Merge pull request #19 from tdeneau/master

Pull Request to address issues 12, 13, 14, 16, 18