Node partitioned mesh reader

[GL] A 2nd version for the calc. of the vol. of a tet.

The constructor is doing this work already.

Uncrustify use WS as initial source code.

This avoids most of implicit conversions.

The change is possible, because the stored numbers are already of type long
and are non-negative integers.

Check values of integer before casting for mpi transmission in
readBinaryDataFromFile() and readCast*ASCII().

If the conversion is not possible, return with error.

This checks for possible overflows for two
arbitrary types.

[IO] Replace pointer types with std::vector.

[T] Use Logog formatter pointers. Reduce indent.

[MeL] Remove default NodePartitionedMesh dtor definition.

[MeL] Const correctness of NodePartitionedMesh::isGhostNode().

[IO] Remove default NodePartitionedMeshRead definiton.

[IO] Split long lines.

[IO] Correct doxygen comments.

[IO] Correct private _mpi_comm variable name.

[IO] Correct typo in buildNodeStructTypeMPI() fct name.

[IO] Use NodeData reference instead of pointer.

[IO] Add std namespace identifier for std::getline.

[IO] Remove printMessage().

[IO] Remove unused MPI_status, make message_tag const.

[IO] Add private NodePartitionedMeshReader::readDataFromFile().

This encapsulates MPI IO code.

[MeL] NodePartMesh: Change global node id type to std::size_t.

[IO] Fix some of implicit int type conversions: sign/width.

[IO] Correct doxygen comments.

[IO] Move MPI communicator init to NodePartMeshReader ctor.

[MeL] Use size_t from std namespace.

[IO] Use postfix increment for counters.

[IO] Pass a vector to buildNodeStructType().

[IO] Use std::vector's data() instead of &v[0] in MPI calls.

[IO] Rewrite openASCIIFiles. Scopes and var names.

[IO] Improve const correctness.

[IO] Remove almost unused MeshLib namespace include.

[IO] Improve some comments.

[IO] Add missing includes and remove unused one.

[MeL] Remove unused forward declaration.

[IO] Replace _size_str with on-the-fly conversion.

[IO] Spelling

[IO] Remove duplicate information.

[IO] Improve const-correctness of member fcts.

[IO] Use std::vector in readElementASCII().

[IO] Move up MPI_node deallocation.

[IO] Rename variables.

anode -> node.
s_nodes -> nodes.

_size -> _mpi_comm_size
_rank -> _mpi_rank

[IO] Replace mesh_controls type with std::array.

In the readASCII().

[IO] Variable declaration at definition/use point.

[IO] Rewrite buildNodesStructTypeMPI().

Shorten the code, use MPI blocks for array (of three coordinates).

[IO] Make _mpi_node_type a class variable.

Move initialization to ctor and freeing to dtor.
Function renames.

The reader must exit scope before MPI_FINILIZE
is called.

[IO] Change variable's type long->int; MPI_Send().

[IO] Comment on element types.

[IO] Rename readBinaryDataFromFile(). Change container type.

Cleanup

Fix warnings and small bugs

The return value of GEOObjetc::exists() is now a std::size_t.
This change makes some casts unnecessary und thus the code more readable.