A number of changes were implemented to handle large FITS files more
gracefully and to correct bugs associated with large files.  This includes
a change to the method
   Data.getTrueSize();
This method was public only for the BinaryTable data type and previously
returned an int.  It now returns a long.  User programs which called this
method will need to be recompiled.  
Specific bugs were noted by Javier Diaz and Juan Carlos Segovia.
Note that the program may still fail on very large files but it should give
more informative error messages when it does so.  

There's a lot of work needed to handle this properly and additional changes
may be made through the summer.

A bug noted by Thomas Granzer in the handling of HIERARCH keyword values
was also corrected.