tree 40236ae87ead690dbda1e37e52effbdfaa330808
parent b13e42da3eafd8bdbfbcb3abf31936236085f09c
author Sameer Agarwal <sameeragarwal@google.com> 1349127352 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1349130208 -0700

OrderedGroups implementation.

This generalizes the Ordering object and paves the path for a more
general inner iteration API.

Change-Id: I6efce5f999c2bfab5f90a8a18e21140581f207cd