Once a process returns from WM_ENDSESSION, we can assume it has finished
doing any cleanup it needs but will most likely not shut down on its own.

The --kill switch ends processes from all desktops, but --end-session only
applies to the current desktop. This causes windows from other desktops to
dangerously close without notification that the session is ending.

ws2_32: Return the full list of local IP addresses when gethostbyname() is called on the local hostname.

Don't rely on CFLocaleGetIdentifier(), whose result may not be sensible to
the C library.

This reduces size of the next patch.