check_nta: use S2_CASE()
check_nta: use S2_CASE()

Ignore-this: c94d4219b0882f1343bcfc56f975ea48

darcs-hash:20090305190615-db55f-9b3b5cdb6fb289080e0477aed7854ad94f44c0eb.gz

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