Compilation fails on OSX

[ktbolt]

I tried to build on a Mac but compilation failed with the following error

svSolver/Code/ThirdParty/nspcg/simvascular_nspcg/nspcg4.f:687:24:

   call pfs (n,b1,b2,x)
                    1

Error: Actual argument contains too few elements for dummy argument 'x' (1/2) at (1)

[ktbolt]

The compilation error is caused by the latest gfortran 8.1 release which is part of gcc 8.1.

When an actual argument contains too few elements for a dummy argument, an error is now issued. The -std=legacy option can be used to still compile such code.

I added this option to the CMAKE_Fortran_FLAGS varaible in the svSolver/Code/CMake/SimVascularOptions.cmake file and everything now compiles.

[ktbolt]

This has been merged and released.