Include file:
To use create a static instance initialized with the class name, i.e.
'static LeakChecker checker("OverlayRaster")', then add a 'checker.create()'
call to each constructor and a 'checker.destroy()' call to each
destructor. When the program is terminated the static instance of the
leak checker will be destructed, and a count of un-destructed (alive)
instances will be printed to stderr.