Fixed REFPROP.cpp to check for error at setup and also to check for fluid file in c:\\Program Files\\REFPROP\\fluids

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Fixed C# wrappers

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added warning code and fixed wrappers for SWIG for C#

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Fixed bugs in REFPROP warnings

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/ibell/coolprop

Conflicts:
	CoolProp/gitrevision.h

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>