added docs to msvc project, fixed some doxygen warnings.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@317 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_core.h

@@ -417,7 +417,7 @@ SWITCH_DECLARE(switch_status) switch_core_session_add_event_hook_answer_channel(
 /*! 
   \brief Add an event hook to be executed when a session sends a message
   \param session session to bind hook to
-  \param answer_channel hook to bind
+  \param receive_message hook to bind
   \return SWITCH_STATUS_SUCCESS on suceess
 */
 SWITCH_DECLARE(switch_status) switch_core_session_add_event_hook_receive_message(switch_core_session *session, switch_receive_message_hook receive_message);