Add missing forward declaration
Fix warning
fix name completion for instances
Synchronize TPacketizerUnit with 'master'
Fix warning on Windows
Undo previous fix, it generated an extra page in pdf files.
Better fix under investigation.
The option "A" in the `Draw()` was not cleaning properly the current pad.
Silence CID 52142: check dynamic_cast NULL retval
Silence CID 52143: don't deref NULL ptr