Should fix some building issues on Win32.

gl.c

@@ -20,11 +20,13 @@
 #include "driver.h"
 #include "config.h"
 #include <GL/glfw.h>
+#include <GL/glext.h>
 #include <stdint.h>
 #include "libsnes.hpp"
 #include <stdio.h>
 #include <sys/time.h>
 
+
 #ifdef HAVE_CG
 #include <Cg/cg.h>
 #include <Cg/cgGL.h>

openal.c

@@ -22,6 +22,10 @@
 #include <time.h>
 #include <string.h>
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
 #define BUFSIZE 128
 
 typedef struct al
@@ -217,6 +221,9 @@ static void __al_free(void *data)
          free(al->res_buf);
       }
    }
+   alcMakeContextCurrent(NULL);
+   alcDestroyContext(al->ctx);
+   alcCloseDevice(al->handle);
    free(al);
 }