tree dfa569c4371ac728b5788e26f2ab25b2598e4272
parent b766177bab63363ff5fbbd5efca69a7fcff832ad
author Sameer Agarwal <sameeragarwal@google.com> 1401397499 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1401400990 -0700

Move IterationCallbacks into their own file.

1. Merge TrustRegionLoggingCallback and LineSearchLoggingCallback
   into a single callback.
2. Move the callbacks into callback.h
3. Update SolverImpl to use the new callbacks.

Change-Id: I9e82173cf2b828d023d96c57d1cba17f4832aeae