Fix adding computed equilibria to solution list in strategic LCP Nash solver.
Combine nfg2html and nfg2tex into gambit-convert.

Creates new command-line program gambit-convert, incorporating
the nfg2html and nfg2tex transformations.

This is intended to form the foundation of a general-purpose tool
for converting among various file formats, and doing other simple
transformations on games.
Merge remote-tracking branch 'upstream/master'