- added wrappers over Qt classes for seamless replacement if Qt is not available
- added bstrlib as submodule
- only UEFIExtract works with this changes for now, others will followa bit later
- files split into common and app-specific ones
- messages from parser and finder separated
- ffsEngine split into multiple classes to reduce complexity
- still no image rebuild
- new ffsParser is done, supports FFSv3, non-UEFI data everywhere, fixed
files, offsets for uncompressed data and many other things
- command-line utilities are removed until the end of new engine's
development
