Update whole linphone stack up to 21-Jul-2017

[istitov]

• bcg729
• bcmatroska2
• bctoolbox
• bcunit
• belcard
• belle-sip
• belr
• bzrtp
• linphone
• linphoneqt
• mediastreamer
• ortp
• plugins

Link to sources

[stefantalpalaru]

media-libs/mediastreamer-2.9.0-r2::gentoo doesn't compile with net-libs/ortp-0.27.0::stuff

[istitov]

Sorry for the delay - will do it at the weekend.