This allows users to direct hypre's error messages to a memory buffer instead of stderr. With this, there are now three basic ways to use hypre when configured --with-print-errors:
- Default (mode 0): Errors are printed immediately to stderr (there is no processor information available in this print).
- Store errors in memory (mode 1) and call PrintErrorMessages to print them.
- Store errors in memory (mode 1) and call GetErrorMessages to manage the error messages however you like.
