[sugar] add xcompmgr to the olpc-development stream builds

[Marco Pesenti Gritti]

On Wed, Nov 12, 2008 at 4:52 AM, Bernie Innocenti <bernie at codewiz.org> wrote:
> However, I noticed we also run the window manager from there and it
> would make a lot of sense to keep the composing manager next to it.
> Some modern window managers even do both things.
>
> Perhaps these things should be moved to olpc-session?  Either way, it
>  could be done at a later point with a separate patch.

I'm trying to stay more or less consistent with the separation between
DM and desktop session, for practical reasons (Sugar needs to work
fine if runned from gdm, for example).

olpc-session is the equivalent of a DM, so I don't think it should run
the window manager, nor the composite manager.

Marco