Stdio.File->async_connect doesn't work (with threads?)

Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2403

Reported by David Hedbor, Idonex / Real Networks david@hedbor.org

When using Stdio.File()->async_connect(), you get both the successful callback and the error callback right after doing the call. The connect is not actually done at that time.

Discussions with Hubbe seems to point to this being the case when connecting from a thread other than the main thread. True for Pike 0.6 to 7.3.