UNDO: Do not put NUA's .c files into doxygen's internal scope. This resulted in documentation for many important functions such as nua_invite to be missing from the generated online documentation.
UNDO: Do not put NUA's .c files into doxygen's internal scope. This resulted in documentation for many important functions such as nua_invite to be missing from the generated online documentation.

darcs-hash:20060927094624-7659e-35ffc14b0f25545b2ede7f236b976c751b8429e9.gz

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