Clean: Move hookutils scripts to separate directory.
Issue #642: Fix the django hook to find root directory with django 1.4 project structure.
Enh: Add tests for twisted reactor and qt4reactor.
Issue #642: Extend PYTHONPATH by top-level directory containing main executable script of the app.
Issue #642: Fix other issues in django hook failing PyInstaller.
Issue #642: Fix hiddenimports in django hook.