Added solver for T-s value pairs

- Props and State classes can now be instantiated with T-s pairs
Changed tolerance value for ancillary saturation check in density_Ts

- test_subcrit_twophase_consistency() works for (T,s) pairs for all
  fluids now
Added (T,s) value pairs to consistency test
Added (T,s) pair as possible input values to API doc
-O2 now works for Javascript - 2 times smaller download.

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Use BoundedSecant solver in density_Ts

- constrain density to positive values
Merge pull request #128 from spinnau/Ts_solver

Added T-s value pair for definition of fluid states
Small changes to Fortran code
Close to building on PPC for vxWorks

Removed PengRobinson (not used); Disabled Catch import in Helmholtz.cpp; static variables in REFPROP.cpp; static version in version.h

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/ibell/coolprop
Updated setup.py to yield static version string in version.h

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Fix to Ice.cpp to get it to build for vxWorks

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Improved instructions for vxWorks build

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Fixed https://github.com/ibell/coolprop/issues/87

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

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

Conflicts:
	CoolProp/gitrevision.h

Fixed

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added files for Fluent to main CoolProp tree

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

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

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Updated examples and web files

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