Merge branch 'release-2.2.0' into develop
post-release version bump
add prototype/spawn
add other prototypes for spawning processes
add utils/install_oneiric
check for librtmidi, not stk
use new way to set cluttersink's texture
remove -Werror since cluttershader is deprecated
use RTMIDI libs everywhere
Merge branch 'precise-fixes' into develop
turn list of packages into a command in README
fix bug with made jackd running even if not using MIDI
prepare 2.2.2
update NEWS again
Merge branch 'release-2.2.2'