Updated and partially checked version

Updates:
the exact virtual NLO implementation of Ste, with the run card option
to choose schemes

the qg reg exact correction by Betta & Raoul

the N3LO log pieces implemented by Ste

More information on channel contributions

The four experimental plus definitions applied on the Mocht piece (and
only the mocht piece) are available in the output

There is a mincuba version with less information provided, but it is
likely that it will not be compiling due to architecture issues that
are still unresolved. In that case the user needs to link against a
Cuba 2.1 library by providing the full path of such an installation
directory. It will not work with Cuba 3.*.

The b-b bar channel is temporarily defunct!