Add libtool scripts

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
spsc_queue: Add spsc_queue_destroy()

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Add test infrastructure and a single thread test for spsc_queue

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Add multithreaded test for spsc_queue

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>