Update Qt5 ports to 5.3.2.
Proudly presented by the KDE on FreeBSD team, with several guest stars.
This update took way longer than initially expected due to us previously
accumulating assumptions and changes to Qt's build system that finally bit
us back with the 5.3 release series, so we had to do a fair amount of
- comms/qt5-serialport: Qt functions to access serial ports, originally
based on work by Fernando Apesteguia. 
- devel/qt5-qdoc: Qt documentation generator, the Qt5 equivalent of
devel/qt4-qdoc3. Originally worked on by Tobias Berner.
It had already been half-split from devel/qt5-buildtools,(Only the first 15 lines of the commit message are shown above )