Polynomials and solutions in the Path library, in PHCv2.4.35

This directory is the reworked Poly subdirectory of the Path directory.
Poly defines the data structures for the code on the host.
The code is reworked to use templates properly.

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file name         : short description
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dict.h            : dictionary for the symbols of variabes
linklist.h        : templated linked list
linklist.tpp      : definitions of the templated code of linklist
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utilities.h       : templated prototypes of utility functions
utilities.tpp     : definitions of the code prototyped in utilities.h
poly.h            : templated data structures for polynomials and systems
poly.tpp          : definitions of the templated code of poly.h 
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polysol.h         : templated classes for solutions of a polynomial system
polysol.tpp       : definitions of the prototypes in polysol.h
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test_poly         : reads a system from file and prints it
test_polysol      : reads solutions from file and prints them
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