Do not connect to cvs.openbsd.org in regress. Run on loopback to
make the test pass without internet access.
OK mpi@

When interrupted, connect() should leave the socket connecting in the
background, similar to a non-blocking socket. Return EALREADY whenever
already connecting, not just for non-blocking sockets. Fix from {Free,Net}BSD

Prompted by a report from Michael Reed (m.reed (at) mykolab.com)
ok millert@

test for interrupted connect.