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.

Following modifications of `CMakeLists.txt` files.

With `target_sources` rather than referring to their path from another
directory.

With `target_sources` rather than referring to their path from another
directory.

With `target_sources` rather than referring to their path from another
directory.

It was difficult to find the `CMakeLists.txt` that controlled the the
compilation of a given file from the message of a compilation error.

This did not produce an error because the mod files are also in
`${CMAKE_CURRENT_BINARY_DIR}`.

It was difficult to find the `CMakeLists.txt` that controlled the the
compilation of a given file from the message of a compilation error.

Since `NR_util` has been integrated into Jumble.

Following update of the library.

Just sparing one test on rank.

But reading from them is not here yet.

Needed by test `Set_max_speed_degenerate`.