rtaudio mini-transition soname 4v5->5

[Jaromír Mikeš]

Hi dear release team,

Now with rtaudio-5 in the archive, we can start transtion the existing
packages to the archive so that the new rtaudio package can transition to
testing. The following source packages need to be rebuilt:

stk
jacktrip
mlt

In terms of 'ben' lingo, the transition has the following parameters:

Affected: .build-depends ~ /librtaudio-dev/
Good: .depends ~ /rtaudio-5/
Bad: .depends ~ /rtaudio-4v5/


Please schedule binNMUs for the above mentioned packages on all architectures.

Thank you.

-- 
regards,
    mira