This is a first rough implementation of QScintilla support as SQL text
editor.
It should work mostly and build fine with qmake as well as cmake. The
new code supports all the features of the old one plus adding a few
subtle improvements. The main point of this, however, is reducing the
code we have to maintain and making it easier to add new features to the
editor.
Before making any changes to the gen_version.h file check if the number
of the last git commit actually changed. If not don't touch the file.
Enable the version.sh script also for debug mode. With the above change
the program is not compiled and linked every time again, so there's no
reason to not run this. This also fixes a build error for those people
just checking out the repository and doing a debug build.