[IOS] adjust method for set now playing info to make it reusable.
[IOS] Handle OnSpeedChanged announce.
add #ifdef around UPnP setting things to fix build with --disable-upnp
Merge pull request #2409 from herrnst/pr-fixdisableupnp

add #ifdef around UPnP setting things to fix build with --disable-upnp
Merge pull request #2404 from ulion/ios_now_playing_info_adjust

[IOS] now playing info adjust