Update scripts

Some improvements to robustness and behaviour of the scripts
bridge: daemon -> openwebrtc-daemon

Use a less generic name since this can be installed to /usr/bin
Do weak-linking to VideoToolbox for iOS

This way we will get hardware codecs on iOS8+ but still can
run on devices using an older version of iOS.
Fix libtool to work properly with -weak_framework linking
local: Don't set 0 as maximum framerate if none is given

That's going to cause an assertion, the valid range is [1,MAX]. Also
don't plug a videorate element at all if the maximum framerate is
given as 0.
Update scripts

Patch libnice to significantly reduce time taken for ICE/DTLS connection
establishment
Add link to openwebrtc-examples
Update scripts

Fix possible double free in libnice