AAlib driver was using C runtime string functions without including string.h.
Fixes Bugzilla #131.
--- a/src/video/aalib/SDL_aavideo.c Wed Feb 01 19:59:02 2006 +0000
+++ b/src/video/aalib/SDL_aavideo.c Thu Feb 02 05:35:42 2006 +0000
@@ -25,6 +25,7 @@
#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
#include <unistd.h>
#include <sys/stat.h>