PlayerThread: rename player_create() to StartPlayerThread()

src/Main.cxx

@@ -573,7 +573,7 @@ int mpd_main(int argc, char *argv[])
 
 	ZeroconfInit(*instance->event_loop);
 
-	player_create(instance->partition->pc);
+	StartPlayerThread(instance->partition->pc);
 
 #ifdef ENABLE_DATABASE
 	if (create_db) {

src/PlayerThread.cxx

@@ -1191,7 +1191,7 @@ player_task(void *arg)
 }
 
 void
-player_create(PlayerControl &pc)
+StartPlayerThread(PlayerControl &pc)
 {
 	assert(!pc.thread.IsDefined());
 

src/PlayerThread.hxx

@@ -40,6 +40,6 @@
 struct PlayerControl;
 
 void
-player_create(PlayerControl &pc);
+StartPlayerThread(PlayerControl &pc);
 
 #endif