webui: cosmetics cleanup of static/app
SAT>IP: fix spelling (sattellite -> satellite)
tcp: use getaddrinfo() for hostname resolution

gethostbyname_r() is GNU extension not supported on some platforms.
This commit replaces it with POSIX standard getaddrinfo() call.
SAT>IP: allow to specify the local bind IP address
IPTV: Fix the remaining memory leaks
iptv: workaround for printing error on mux delete
tcp: don't free on error (it won't be assigned)
scanfile: Fix the recent DVB-T2 line parsing
mpegts: scan done - fix the mux name initialization
SAT>IP: Fix the global_lock input thread deadlock
Remove dependency on linux dvb headers

This fixes --disable-linuxdvb on systems without linux dvb headers
Merge pull request #381 from clandmeter/cosmetics

webui: cosmetics cleanup
Merge commit 'c3772ce7a2c43097dc16dac3b41ccd726e150d56'
udp: a little ifname optimization
rtsp: Use session header also for the options cmd