new updates on the CVS

Hi there

I've updated the CVS version with further enhancements:

    * initializing of the structure for parser function parameters
      was changed in order to initialize the fields to their default values
      (instead of 0)
    * list of acceptable values for options can be have a type different 
from
      string
    * usage string is printed only if not empty (as suggested by Gyozo Papp)
    * in case of hidden options, the generated help string array reuses the
      strings of the full help array (as suggested by Gyozo Papp)
    * the _help field for options is correctly generated even in the 
presence
      of additional text before and after an option and also groups


in particular, I discovered the last bug when optimizing the help array 
option generation :-)

as you can see, a type can be specified for values; fortunately, the 
code generation refactoring made pretty easy to add types to values... 
I'm afraid, Gyozo, that the same does not hold for enum values, which 
require some more work (which I'll take care of as a next step :-)

feedback will always be very welcome :-)

cheers
	Lorenzo

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Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
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