Optimization: Avoid calling MAKE_RELATIVE_PATH on absolute paths.
Optimization: Avoid calling MAKE_RELATIVE_PATH on absolute paths.

* This makes using "os.path.join" in that function unnecessary,
  allowing us to replace it with mere string operations.

* Needed for not having to have "os" as bytecode early on and
  being able to load it in our own bytecode loader.

* This also gives smaller code for main module and avoids it, which
  makes it a valid optimization of its own right too.

kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka