Added simple example for mixed-mode FORTRAN/c++ compilation - works

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Detailed example working with gfortran/g++ mixed compilation, but without module

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added modular FORTRAN wrapper files using ISO_C_BINDING

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Updated docs for FORTRAN example, tidied up example.

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added COOLPROP_LIB and CONVENTION=__cdecl to static library.  Will only impact c-style exports, so should be safe.

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

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

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

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