Poll-able queue
For %"Flexible Forwarding Interface / AAP 2.0" we need a new/adapted queue implementation that allows one task to wait for multiple queues at once. Our "pipe queue" that is used in the App. Agent can do this but passes messages via system calls. (A shared memory queue with a single mutex might be preferable.) I propose to adapt the "simple queue" such that it uses only one mutex and add a function to wait for multiple mutexes at once.