so we don't have to remember the options

Use
   EXEC=valgrind _build/run

This makes debugging way simpler

It's a stupid stub.

They should not have ended up there in the first place

Just enough to make gsd-power start up

This adds a common base class PhoshMenu for all top panel menus so
phosh.c itself doesn't need to care about the details and we don't
duplicate the code.

(based on gnome-shell/maynard)

We switch to a private shell protocol from here on.  This might get
folded back into weston's desktop shell protocol at a later point when
we see what else is needed.