Update the manual information on the deterministic solver

The Laffargue-Boucekkine-Juillard algorithm is not the default anymore
(cherry picked from commit cf1cec341f98db86b7992b67829d4224e0cf6fad)
Make check.m display error messages

Fixes #619
(cherry picked from commit e5956262598bd06575ca5736ce6e6c44e3f53a9f)