Add a test for an epoll+signalfd issue encountered in wayland
Add a test for an epoll+signalfd issue encountered in wayland

The wayland event_loop_signal test fails non-deterministically on FreeBSD
due to a missing SIGUSR1 notification. This test case is a minimal
reproducer for the issue: it passes on Linux but fails when run on FreeBSD.

jiixyj/epoll-shim