add new AS and ASP supervisors as well as FSM for AS
This is part of a new process hierarchy for proper operation of a SG
(Signalling Gateway) with a number of AS, each containing multiple ASP,
the respective state management, fail-over, etc.
The AS supervisor starts the AS fsm and the ASP supervisor.
The ASP supervisor will be used to start and maintain ASP fsm's
(xua_asp_fsm), which in turn link into the respective M2UA/M3UA/SUA
behavior.
Those ASP fsm's will then be used by the processes that represent the
SCTP associations.
3 files changed