Results 10 issues of misunmin

Just a followup: support with some prints on BCs info in logfile would help. For example, having a list of BCs with total # of faces for each BC, etc.

Running for both velocity and temperature, using a re2 with BCs for velocity only: Works: * MPIIO + rea/re2 * MPIIO + par/re2 * NOMPIIO + rea/re2 Fails: * NOMPIIO...

* @fischer1: update dprocmap for faster mesh reading at large element counts * @misunmin: add re2 timing breakdown and test up to 2B elements for nek5000/nekrs

Checklist 1. check Nek script concerning non-restart/restart 2. check required additional fields depending on applications 3. indication of usual & restart I/O producing vtk in logfile 4. perhaps, add material...