Reverting commit 8ef2473e. We no longer have preprocessor directives
since commit 2905904d.

In pandas for example, a column header name containing a blank is not
convenient.

The function would crash anyway because "extremum" is not in
`handler["readers"]` but the error messages would be less clear.

Useful for ARM Performance Reports and Intel Application Performance Snapshot.

Useful to read shapefiles from conversion of Matlab data.

Use the env keyword of `test_compare.py` rather than setting env on
the command line. This seems a little clearer and it allows us to
remove the stdout line in the test description. The possibility to add
env was added to `test_compare.py` in commit 4964d767 of the
`Test_compare` repository, after replacing mpiexec by `$mpiexec` in
`eddy_graph.sh`, in commit 850efa4b of the present repository.

Generalize `eddy_graph.sh` to accept several SHPC on the command line.

We can make a symbolic link or copy to `$large_input_dir`.

In particular for several SHPC.

Generalize `test_read_snapshot` to accept several SHPC onthe command line.

This `accept.py` also serves as an example for a module accept
accompanying the script `filter.py`.

Use the first date of the SHPC as default date to read.

Because we are going to use the first date from hshp as a default date
to read.

Avoid an exception later in function snapshot.

Avoid calling hunt in that case.

See commit a86422ee.

Read name of input SHPC for program `test_read_eddy` from the command line.

The field name was incorrect since commit 055c0755.

The bug was introduced in commit b3615f59.