Finished modifying the new way to create the Lagrangian preconditioner.
Now most of the set up is automated within rayheader.h

Also renamed all the validata, so that it makes sense in the new scheme.

Added "tags" to .gitignore

So the lagrange_square/sq_lgr.cc file is heaviy modified.
modified:   lagrange_square/sq_lgr.cc

Cleaned up code: deleted some commented out code.
Doing step_po, first modification.

modified:   lagrange_step/step_po.cc
Got rid of reference to SquareLagrange namespace, started to make the
problem distributed.

modified:   rayheader.h
Copied SquareLagrange namespace and called it StepLagrange

The step_po.cc code currently compiles!
modified:   lagrange_square/sq_lgr.cc
Added a small note to do the label for looping Reynolds numbers
Backwards facing step problem now works.
Need to verify by looking at the solution though.
modified:   lagrange_step/step_po.cc
modified:   rayheader.h
Moved the format of results to rayheader.h
Made step_po looping Reynolds work.