Network change without pthread
Network change without pthread

Make room for network change implementation that would not need pthread.
BSD(AF_ROUTE) and Linux(AF_NETLINK) would typically only need to
register a socket to the root object, which is more lightweight.

Also some cosmetic fixes.

darcs-hash:20070124104255-9301c-583bbbddabbd3dd2add51a8a22accb7b7139c05e.gz

xhook/sofia-sip,unispeech/sofia-sip,erdincay/sofia-sip,erdincay/sofia-sip,unispeech/sofia-sip,jart/sofia-sip,xhook/sofia-sip,xhook/sofia-sip,BelledonneCommunications/sofia-sip,jart/sofia-sip,xhook/sofia-sip,erdincay/sofia-sip,BelledonneCommunications/sofia-sip,BelledonneCommunications/sofia-sip,jart/sofia-sip,BelledonneCommunications/sofia-sip,erdincay/sofia-sip,xhook/sofia-sip,unispeech/sofia-sip,unispeech/sofia-sip