add pelim say stuff, module framework, xml parser, dialplan app, and add new channel var called sound_prefix for audio files

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3766 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_module_interfaces.h

@@ -412,6 +412,20 @@ struct switch_speech_handle {
 	void *private_info;
 };
 
+/*! \brief Abstract interface to a say module */
+struct switch_say_interface {
+	/*! the name of the interface */
+	const char *interface_name;
+	/*! function to pass down to the module */
+    switch_status_t (*say_function)(switch_core_session_t *session,
+                                    char *tosay,
+                                    switch_say_type_t type,
+                                    switch_say_method_t method,
+                                    switch_input_callback_function_t dtmf_callback,
+                                    void *buf,
+                                    uint32_t buflen);
+	const struct switch_say_interface *next;
+};
 
 /*! \brief Abstract interface to a chat module */
 struct switch_chat_interface {