Option to print Julia task backtraces on timeout #175
Description
follow-up to #120 to help debug deadlocked tests
either by starting a timer that completes just before timeout that would ccall jl_print_task_backtraces , or extend Julia's SIGINFO to optionally do it (like have JULIA_PROFILE_PEEK_HEAP_SNAPSHOT allows you to also get a heap snapshot as well as a profile)