Change to version 2.9.0.
Merge branch 'release/v2.9.0'
Merge branch 'release/v2.9.0' into develop
Merge branch 'develop' of github.com:vrsys/avango into develop
Remove symbolic link.
Merge branch 'master' into develop
Apply pylint suggestions.
Move include(find_zmq) to the other includes.
Add search script for OpenAL.
Add CMakeLists.txt for avango-openal.
Remove duplicated code.

DRY.
Use schism math types.
Add alut and vorbisfile.
Use openal example from attic.
Remove obsolete SConscript.
Add Readme.txt.
Adapt to avango changes.
Merge branch 'feature/openal' into develop
Fix path in Readme.txt.
added first gesture classes