owl does not handle out of memory conditions sanely

[Aki Helin]

What happens:
$ bin/owl
You see a prompt.
> (let loop ((a 1)) (+ (loop a) (loop a)))
ovm: could not allocate more space
$

What should happen:
$ bin/owl
You see a prompt.
> (let loop ((a 1)) (+ (loop a) (loop a)))
out of memory. dropped thread <repl eval thread name>
>

[Aki Helin (aoh)]

What happens in r123:
$ bin/owl -m 4 # soft memory limit in mb
You see a prompt.
> (let loop ((a 1)) (+ (loop a) (loop a)))
syscall 14 - memlimit exceeded, dropping a thread
error: instruction memory-limit info #(False False)
>