Call realpath to parse . and .. from both blender binary location and Resources to get absolute paths
This is needed to get absolute directories from bpy.app.binary_path (and _python) and bpy.utils.script_paths()
script_load_module tests will fail because script_paths() returns
When testing, modules are done with recursive search and since Contents/MacOS/../Resources/script/modules and Contents/Resources/script/modules aren't considered as same thing, we'll get modules twice.