[petsc-dev] a few pull requests hanging around; need to do something about

[Barry Smith]

  Either merge them if they are ready or prod for fixes if they are not


TAO examples: update to new DMProjectFunction and DMComputeL2Diff API by adding time=0.0
Patrick Sanan - #576, last updated on 13 Oct 2016

Plex: swap DMPlexDistributeCoordinates() and DMPlexDistributeLabels() in DMPlexMigrate()
Sander Arens - #575, last updated on 12 Oct 2016

Added exodus side set names to DMLabel [plex].
michael_afanasiev - #545, last updated on 10 Oct 2016

clean up, added box mesh to ex2, added make targets
Mark Adams - #565, last updated on 25 Sep 2016
	
TAO: add norms and inner products, equality-constrained SQP
Geoffrey Oxberry - #506, last updated on 21 Sep 2016