because test_idle failed while running with test -w (and no -jn).

because test_idle failed while running with test -w (and no -jn).
Prevent a non-fatal warning from test_config_key.

instead of in separate massagebox.  Redo tests to match.
Add Mac OSX refinements.  Original patch by Mark Roseman.

Initial patch by Jelle Zijlstra.

Patch by Jelle Zijlstra.

Patch by Jelle Zijlstra.

Initial patch by Jelle Zijlstra.

Patch by Jelle Zijlstra.

Initial patch by Jelle Zijlstra.

Patch by Jelle Zijlstra.

Reported by Oleg Gromyak on docs@

SOCK_RAW is marked as optional in the POSIX specification:

    http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_socket.h.html

Patch by Ed Schouten.