Started on new brine formulations
still missing matrix math integration
Added new base classes and moved polynomials to Horner-scheme formulation
Merge branch 'refs/heads/master' into brines_solutions

Conflicts:
	CoolProp/IncompLiquid.h
Some small changes
partly done, ready for merging a few files back to master.
Merge branch 'refs/heads/brines_solutions'

Added new polynomial functions for incompressible fluids, brines now have the same base class as other incompressibles, started on a new brine structure, the new files are not actively used, yet.