output/jack: renamed option "ports" to "destination_ports"

Be more clear which kind of port should be configured here.

NEWS

@@ -38,6 +38,7 @@ ver 0.16 (20??/??/??)
   - jack: connect to server on MPD startup
   - jack: added option "client_name"
   - jack: clear ring buffers before activating
+  - jack: renamed option "ports" to "destination_ports"
   - jack: support mono input
   - httpd: bind port when output is enabled
   - wildcards allowed in audio_format configuration

doc/user.xml

@@ -758,7 +758,7 @@ cd mpd-version</programlisting>
               </row>
               <row>
                 <entry>
-                  <varname>ports</varname>
+                  <varname>destination_ports</varname>
                   <parameter>A,B</parameter>
                 </entry>
                 <entry>

src/output/jack_output_plugin.c

@@ -238,7 +238,15 @@ mpd_jack_init(G_GNUC_UNUSED const struct audio_format *audio_format,
 	if (!config_get_block_bool(param, "autostart", false))
 		jd->options |= JackNoStartServer;
 
-	value = config_get_block_string(param, "ports", NULL);
+	value = config_get_block_string(param, "destination_ports", NULL);
+	if (value == NULL) {
+		/* compatibility with MPD < 0.16 */
+		value = config_get_block_string(param, "ports", NULL);
+		if (value != NULL)
+			g_warning("deprecated option 'ports' in line %d",
+				  param->line);
+	}
+
 	if (value != NULL) {
 		char **ports = g_strsplit(value, ",", 0);