eo everything that is general to any representation
es.h everything about real representation (in es dir)
ga.h everything related to bitstring representation (in ga dir)
To be continued by gp.h, and ...
This has lead to some slight modifications in test file eobin and all tutorial
examples files...
This impacts on many files, creating new entries in src (the old ones are moved
to obsolete dir), modifying t-eoSymreg.cpp and t-eobin.cpp in test,
as well as gprop.cc and mastermind.cc in app dir (not to mention almost all
files in tutorial:-(