Dictionary instead of list, following update of `test_compare.py`.

We also change the rule on the input value of `n_dates`. Before we could
have a finite value of `n_dates` if there was a single slice. Now if
we want a finite value of `n_dates` then we have to specify a slice,
even if there is only one. This seems clearer.

There is not much point in keeping a separate experience for
2006/1/1-2006/15/1.

`Inst_eddies_12` uses the current revision and so does not contain
invalid eddies.

Move test `R4_15_splitted` before the tests that use it.

Instead of `Inst_eddies_10_splitted`.

Because the numbering changed when we decided not to write invalid eddies.

Use test `Region_5_15_days` instead of outside experiment `Inst_eddies_4`.

The program `test_weight` no longer exists, since commit 9ff8a9bb.

Introducing `config_graph_nml`.

Following commit 3289c070.

Changing my mind. In an SHPC, store shapefiles in
"Slice_{slice}/{orientation}" instead of
"{orientation}/Slice_{slice}". Two reasons: easier to store accessory
files from running `inst_eddies`, such as `perf_report` and output
from Torque submission script; clearer that a slice should contain the
same dates for both orientations.

Assume that a slice is in a directory
"{shpc_dir}/{orientation}/Slice_{slice}" where shpc_dir can be any
name, orientation is "Anticyclones" or "Cyclones" and slice is an
integer. Do not read or create any longer a file "orientation.txt" in
the slice directory. Add procedure `get_slice_dir`. Add dummy
arguments cyclone and slice to procedure `shpc_open`. Add dummy
argument slice to procedure `shpc_create`.

Option should have been updated in commit e35226da.

Bad names from commit c45cd728.

Following renaming of script.

Add tests for a case where the speed is not defined on a whole segment.

Add a test that is going through `is_node_type` with an integer label.

Following update of `test_compare.py`.

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.

In particular for several SHPC.

See commit a86422ee.

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

Following modifications of `CMakeLists.txt` files.