Unify @modify_environment and @async_modify_environment decorators
Unify @modify_environment and @async_modify_environment decorators

GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,nirbheek/cerbero