* harbour/contrib/hbqt/hbqt.ch
* harbour/contrib/hbqt/hbqt_slots.cpp
* harbour/contrib/hbqt/hbqt_slots.h
* harbour/contrib/hbqt/moc_slots.cpp
! Greatly improved SIGNAL/SLOT mechanism.
Now SIGNAL to SLOT connection is almost instant no matter how many
widgets the application is employing.
! Implemented to relaase code blocks and reuse vacant slots.
It reduces the memory leakage considerably.
* harbour/contrib/hbqt/tests/demoqt.prg
! Commented out non-available Signal/Slot pair reported by linus distro.