tree c15844c5e91b69c7f119b75ee61b0e3f4a4d84fb
parent 2293cb5bc96a5b317ed4ca52aa3494cadecbc07c
author Sameer Agarwal <sameeragarwal@google.com> 1354307563 -0800
committer Sameer Agarwal <sameeragarwal@google.com> 1354329462 -0800

Refactoring of the LineSearchMinimizer.

1. New LineSearchDirection interface, factory and instances.
2. Cleanup of LineSearchMinimizer to use the State and Direction objects.
3. LBFGS -> LowRankInverseHessian.
4. Refactoring of the RunCallbacks function and share it across
   LineSearchMinimizer and TrustRegionMinimizer.

Change-Id: I19354afc6f5d6567b28918710c2012dc30ef8f32