CI: Don't require a particular chisq distance in the unconstrained case
CI: Don't require a particular chisq distance in the unconstrained case

When the profile CI problem is posed as a single fit function then it is
not possible to achieve the correct chisq distance when the MLE is close
to a boundary of the feasible region.

mhunter1/OpenMx,jpritikin/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,jpritikin/OpenMx,JuKa87/OpenMx,mhunter1/OpenMx,mhunter1/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,JuKa87/OpenMx,jpritikin/OpenMx,mhunter1/OpenMx,JuKa87/OpenMx