Revision 482712

Update to upstream release 18.9.0, new maintainer

Details:
- Update to upstream release 18.9.0
- New maintainer: kikadf.01@gmail.com
- Default toolkit is now QT5

While on it:
- Pet portlint / check-sanity

PR:		231856
Submitted by:	kikadf.01@gmail.com (new maintainer)