* contrib/gtqtc/gtqtc.hbp
* added default Qt5 path in Ubuntu64
* debian/compat
* changed compatibility level from 5 to 9
* src/rdd/workarea.c
! do not use casting to functions with incompatible parameters.
Such casting does not work with some ABIs, i.e. when pascal
calling convention is used and called function should clean
parameters from the stack.
This modification should also pacify warnings generated by
recent GCC versions.