QtIFW

Rename binary format classes and functions. Move to QInstaller.

Adjust some minor implementation details. Some renaming of member
variables and function names is left out but will follow in later
patches. Add some documentation.

Change-Id: I929dcbe13fa701be5224b9e5fdf8d19bfff81235
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Niels Weber <niels.weber@digia.com>