Re-enable natify in test_nua.c.
Re-enable natify in test_nua.c.

darcs-hash:20060512121352-65a35-08bb8f15ec39b33be052e418230cf3270cb1daf3.gz

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