When the same inverse location problem was performed several times in
raw, the same result was added several times in the cache. This lead to
singular matrices being created as sample points were not independent.

The corresponding catch was already handled before.

The ParameterDriver class has been introduced in Orekit for
the orbit determination feature.

Replaced raw arrays with Stream instances to avoid giving access
to internal arrays.

This allows for example to retrieve the DEM elevation for a
latitude/longitude pair.

This can be used to set up min/max search lines.

This is still preliminary work, convergence seems slightly wrong.

Some attitude laws constructors used in tests have been deprecated.

This reverts commit b61d7ead.

This reverts commit 3ff8b559.

This reverts commit 294d3a57.

This reverts commit 6c8742ea.