Scripting: Fix exposing all our CoreTypes.h integer types to javascript correctly. Made a test QObject that can be constructed in script and used to test Q_PROPERTY, slot getter and setter and signal with all our integer types. Fixed JavaScriptModule startup script loading so that js refs can be relative to the .xml. Made bin/jsmodules/Tests/test-runner.xml to load test scripts and implemented test IntegerCheck.js test script.