Main interactive drivers and dispatcher for the software package phc.

1. Separate drivers :

     drivroco         Driver_for_Root_Counts
     drivowst         Driver_for_Own_Start_System
     drivrore         Driver_for_Root_Refining

2. Main drivers :

     mainroco         root counting
     mainvali         validation of the results
     bablvali         black-box version of validation
     mainphc          the program
     bablphc          black-box version of the program

3. PHCPACK :

     phcpack          the package as server package
     use_phc          an example of how to use phcpack

4. The main dispatcher :

     dispatch         scans options and arguments and calls drivers
