Main interactive drivers and dispatcher for the software package PHCv2.3.24

New in release 2.1 in this directory is the conversion between symbolic 
and tableau formats, plus the interface of the solutions in Maple format.
Release 2.2 include changes in the blackbox solver (bablphc) to deal
with the special cases of one single polynomial on input.
Changes in release 2.3 are in mainzip (Maple interface),
mainvali (Newton with deflation for singularities), and
mainfeed (computing output feedback laws via pole pole placement).
A new option "phc -q" for path tracking with incremental read/write
was introduced in PHCv2.3.05.  New option 0 in phc -v with v2.3.07.
MixedVol was added in release v2.3.13.

The are four parts in this library :

1. Separate drivers
2. Main drivers and black-box solver
3. PHCpack as server package and how to use it
4. The main dispatcher

-------------------------------------------------------------------------------
file name                    : short description
-------------------------------------------------------------------------------
driver_for_own_start_system  : driver for submitting start system
driver_for_root_counts       : interactive menu-driver for counting roots
driver_for_root_refining     : calls the root refiners
-------------------------------------------------------------------------------
black_box_root_counters      : performs several root counts
bablroco                     : calls the black-box root counter
mainroco                     : calls interactive root-counting driver
maintrack                    : jumpstart path tracking
mainvali                     : menu-driver for validating the results
bablvali                     : black-box version of validation
mainphc                      : the main program running in full mode
black_box_solvers            : to be called by bablphc
bablphc                      : black-box version of the program
-------------------------------------------------------------------------------
phcpack                      : PHC with main drivers according to 4 stages
use_phc                      : an example of how to use phcpack
mainzip                      : strip output solutions into Maple format
mainfeed                     : main driver for computing output feedback
-------------------------------------------------------------------------------
dispatch                     : scans options and arguments and calls drivers
-------------------------------------------------------------------------------

The driver for root refinement are located at this level because symmetry
relations can be used to extract the generators of a list of solutions.
