- Added srvidholdseconds to ratelimiter (experimental)
  a srvid will be kept in slot for additional srvidholdseconds
  if used with enabled ecmunique, the ecm in slot must be ratelimitseconds unique

  E.G. CDS NL 0100:00006A
  
  ratelimitecm = 4
  ratelimitseconds = 10
  srvidholdseconds = 5
  ecmunique = 1

  Assign 4 srvid slots
  Ecm for srvid in slot is unique for 10 seconds
  Slotted srvid will be released after 10+5 = 15 seconds of inactivity



git-svn-id: http://streamboard.de.vu/svn/oscam/trunk@8444 4b0bc96b-bc66-0410-9d44-ebda105a78c1