Not using SIGPIPE if it is not found by configure.
Not using SIGPIPE if it is not found by configure.

darcs-hash:20051101112607-65a35-d2abfba05342f4c2dd247be20aa257140260d8e9.gz

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