debugging: add calls to 'personality'

Insertion of calls to personality for the only
pupose to be able to set breakpoint at some
strategic places.

The chosen places are:
 - After the debug wait point. The intend is to
   allow simulation of breakpoint after attaching
   to the waiting process.
 - Before starting the bindings but after loading
   it. The intend is to allow loading of symbols and
   setting of breakpoints in the debugged binding
   without attaching to afb-daemon that comes without
   debug symbols.

Change-Id: Ie3bfce0956c9844586c7a5f8bd820acb7f58772c
Signed-off-by: José Bollo <jose.bollo@iot.bzh>