Updated the Labview LLB for backwards compatibility

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/ibell/coolprop
Merge branch 'master' of https://github.com/ibell/coolprop
Fixed fits for specific heat for dynalene fluids

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