[CTX] [ALL] Resource usage restriction

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Resource usage restriction

These parameters can be useful where available resources are in severe condition; when the host of DeleGate is heavy loaded, network bandwidth is narrow, or response from server can be slow.

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*	MAXIMA	what:number	maxima of parallel sessions and etc.
*	TIMEOUT	what:seconds	timeout of connection and etc.
*	DELAY	what:seconds	delay for penalty
*	CHOKE	Delay:Clnt:UA:Ref	choking robots

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