Minor fixes

include/global.h

@@ -32,6 +32,10 @@
 
 #define ARRAY_COUNT(array) (size_t)(sizeof(array) / sizeof((array)[0]))
 
+// GameFreak used a macro called "NELEMS", as evidenced by
+// AgbAssert calls.
+#define NELEMS(arr) (sizeof(arr)/sizeof(*(arr)))
+
 #define SWAP(a, b, temp)    \
 {                           \
     temp = a;               \