[SCons] Print options read from cantera.conf
[SCons] Print options read from cantera.conf

This prevents surprises when an unexpected option value is saved in
cantera.conf.


imitrichev/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,imitrichev/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,imitrichev/cantera,Heathckliff/cantera