* build python bindings within qscintilla package via extend_path trick
* add todo
* reflect new setup also in py-pyqt4 package
* get rid of qscintilla dependency
* also tweak qgis for the new setup
* generalize the building of python bindings
* generalize building of pythong bindings to all qt versions
* add qsci_api variant
* add qsci_variant for pyqt4 package as well; add comment
* pyqt dependency should build with +qsci_api variant enabled
* fix bugs
* improve style
* reflect recent changes
* flake8
* improve style
* more flake8
* more flake8
Co-authored-by: Sinan81 <sbulut@3vgeomatics.com>