From V2.22 to V2.23 (Boost 1.50)

From V2.22 to V2.23 (Boost 1.50)
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eUML : better syntax for front-ends defined with eUML as transititon table only. Caution: Breaking Change!
Bugfix: graph building was only working if initial_state defined as a sequence
Bugfix: flags defined for a Terminate or Interrupt state do not break the blocking function of these states any more.
Bugfix: multiple deferred events from several regions were not working in every case.
Bugfix: visitor was passed by value to submachines.
Bugfix: no_transition was not called for submachines who send an event to themselves.
Fixed warnings with gcc