Fix tecplot output for line and plane points

Issue/feature addressed

In FieldConvert modules interppoints and interpptstopts and if tecplot binary format (plt) is used for the output file, the line and plane points cannot be output correctly. This is because the plt format requires three integers for the number of points: Nx,Ny,Nz.

Proposed solution

Extra integers of 1 is added for line and plane. This is compatible to the tecplot ASCII format.

Implementation

Tests

Suggested reviewers

Notes

Please add any other information that could be useful for reviewers. close #321 (closed)

Checklist

• Functions and classes, or changes to them, are documented.
• User guide/documentation is updated.
• Changelog is updated.
• Suitable tests added for new functionality.
• Contributed code is correctly formatted. (See the contributing guidelines).
• License added to any new files.
• No extraneous files have been added (e.g. compiler output or test data files).