SAT>IP: Fix the --satip_xml parameter (local IP address)
SAT>IP: Serialize the tuning - configurable delay
SAT>IP: Add USER-AGENT to the M-SEARCH query
SAT>IP: Send M-SEARCH request three times
SAT>IP: OctopusNet - force a delay after teardown
SAT>IP: Use any UDP port for the UPnP client responses
Fixes for the network scan

- improve dvb_network_find_mux() to better distinguish
  the different muxes
- ensure that the new mux matches the network type
epggrab: tuning and optimizations

- reduce timeout value for nit to 240
- increase interval value for nit to 3600
- process all waiting muxes in one shot
- add the grace value for satellite positioners
Do not accept new muxes from different satellite positions in dvb network
SAT>IP: improve mux stop
dvb network: improve satellite position check for auto discovery
Do not trust tsid in the NIT mux delivery descriptor

Reason:

 Thor 0.8W
   onid 1111 (4369) tsid 000B (11)
     dvb-s  pos 8W freq 12090000 H sym 280000 fec 7/8 mod QPSK roff 35
   onid 1111 (4369) tsid 0063 (99)
     dvb-s  pos 8W freq 12092000 H sym 280000 fec 7/8 mod QPSK roff 35

The frequency is same for DVB-S tuners, but tsid in other tables is 11.