stack & internal memory optimization

will need to move pthread stack to external memory at some point ...

components/raop/raop_sink.c

@@ -18,6 +18,10 @@
 
 #include "trace.h"
 
+#ifndef CONFIG_AIRPLAY_NAME
+#define CONFIG_AIRPLAY_NAME		"disabled"
+#endif
+
 static const char * TAG = "platform";
 extern char current_namespace[];