Build error w/ cmake.

Does this fix the problem?
Revert "Build error w/ cmake."

This reverts commit d41aefbd5ad65e7e29674b31d1225f767a488289.
Merge remote-tracking branch 'upstream/master'
commit long time coming. Everything done. No tests yet. Builds. Runs
Unsure why output isn't being passed
unit files in place, NO tests yet
Merge pull request #726 from benjaminlarson/benBuildMatrixOfSurfaceNormals

Closes #710