Gnats 4693: Crash when configuring statistical table slots.
Fixed in 5.1 Development and 5.0.9 Prerel (future).
Date: 2-3-2009 [Phil]

A crash occurred when either: 

(1) Closing an Open Statistical Slot dialog after having opened, from that
 dialog, the Slot Configuration dialog. [Windows and Solaris].

(2) Opening the Slot Configuration dialog from the Open Statistical Slot 
dialog the SECOND TIME (from any particular Open Statistical Slot dialog 
instance). [Windows and Solaris].

In Q3GUI/StatTableSlotDlg.cpp, the SlotConfigQtDlg pointer (_tableSlotCfgDlg) 
needs to be cleared when that config dialog is deleted.  This is now done
with the Qt QObject Destroyed signal from the config dialog to the open slot 
dialog. 

New method (Qt slot):
  void StatTableSlotDlg::tableSlotCfgDlg_destroyed (QObject*);

Files:
  Q3GUI/StatTableSlotDlg.hpp
  Q3GUI/StatTableSlotDlg.cpp

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