Many bug fix:
* func_fp can be used to compute new_mu without having to resort to a dichotomy. So let's ask users to provide it.
* func_f can be used to compute the dual functionnal (d), that is useful to check the convergence of the gradient. So let's ask users to provide it.
* bug fix in the dichotomy. The stopping condition on overall_error was wrong.
* Compute the dual (d) to check the convergence.
* BUG FIX in the RENO functions. We need to write 3.0/2.0 and not 3/2..... It took me a while to find this nasty one! :(
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@3895
48e7efb5-ca39-0410-a469-
dd3cf9ba447f
