[Nel] Server compilation and Python stuffs

[Cedric Valignat]

Hi,

We improved the Python detection and NeL configuration :

    you do not have to use --with-python as an argument for the
    configure script, now it's automatic ...

We fixed the server compilation, so it should compile with today's
NeL cvs files, but the agent service doesn't work at the momment,
you will get a segmentation fault if you try to launch it :-(


Cedric.