tree cb69209b60a88496e1d8bf8abbc04bc592ce2296
parent e69bd2a206118c0262185baba7a6e710decbcb28
author Sameer Agarwal <sameeragarwal@google.com> 1478004696 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1478004979 +0000

Add GradientProblemSolver::Options::parameter_tolerance.

Support for parameter tolerance was added to the line search
minimizer was added a while ago, and calling Solve on a
non-linear least squares problem supported it but for some reason
the GradientProblemSolver::Options struct was missing this
option even though the documentation suggested that it was present!

Thanks to Noah Snavely for reporting this bug.

Change-Id: I57cf4ab396bc822c19fa298529e113b89664a349