tree 1ccf3a4028e659e7d5c5468752a9846687955216
parent 3d933750a7dcfec04c6408315caccc5034eaf309
author Sameer Agarwal <sameeragarwal@google.com> 1519875707 -0800
committer Sameer Agarwal <sameeragarwal@google.com> 1519876072 -0800

Revert changes to MatrixTransposeMatrixMultiply.

This change while algebraically equivalent was causing non-trivial
changes in the numbers being reported by ceres and in some cases
they got worse.

Also fix a small header include in parallel_for_test.cc which
was discovered as part of testing this patch.

Change-Id: I8c8d61538819f0b25af6059fa75ad068fc22f5e4