Made some const arrays static to avoid unnecessary stack usage.

lib/splay.c

@@ -373,7 +373,7 @@ int main(int argc, argv_item_t argv[])
   int adds=0;
   int rc;
 
-  long sizes[]={
+  static const long sizes[]={
     50, 60, 50, 100, 60, 200, 120, 300, 400, 200, 256, 122, 60, 120, 200, 300,
     220, 80, 90, 50, 100, 60, 200, 120, 300, 400, 200, 256, 122, 60, 120, 200,
     300, 220, 80, 90, 50, 100, 60, 200, 120, 300, 400, 200, 256, 122, 60, 120,