Resolve "SDL2 module"

Closes #29 (closed)

• create a working sdl module
• using only async commands with mpv
• put the sdl module in its own thread
• make the thing working

inc/lektor/defines.h

@@ -14,15 +14,10 @@
 #define LKT_DATABASE_NAME_KLANG         "language"
 #define LKT_DATABASE_KARA_COLUMNT_ANY   "any_col"
 
-#define LEKTOR_TAG_MAX 256
-
-#ifndef LKT_MESSAGE_ARGS_MAX
-#define LKT_MESSAGE_ARGS_MAX 32
-#endif
-
-#ifndef LKT_MESSAGE_MAX
-#define LKT_MESSAGE_MAX 2048
-#endif
+#define LEKTOR_TAG_MAX          256
+#define LKT_MESSAGE_ARGS_MAX    32
+#define LKT_MESSAGE_MAX         2048
+#define LKT_DEFAULT_LIST_SIZE   10
 
 enum mpd_idle_flag {
     MPD_IDLE_NONE               = 0,