Improved reading of results. Made sure that field subsets for the
correct part instance are used. Keeping id to index maps for elements
and nodes, which are used when reading results. Note: Geometry must have
been read before reading results.
Implemented RifOdbReader::readScalarElementNodeField() and
RifOdbReader::readScalarIntegrationPointField(). Needs verification.
Test files with element nodal fields needed.
Cleaned up interface. openFile() must be called before getting metadata,
results, or geometry. Running unit tests for only one reader instance
for the test file.
Reporting nodal, element nodal, and integration point result names
separately. Some functions in the geo mech interface were renamed.
Renamed "result" to "field" in function and parameter names in the
interface. TODO: Consider if we should report integration point results
as element node results too, and extrapolate when requested, if needed.
Fixed map handling in RifOdbReader::componentIndex().
Stein Dale