Header refactoring: bitmap - unify and remove from catchall.

include/jemalloc/internal/arena_structs_a.h

@@ -1,6 +1,8 @@
 #ifndef JEMALLOC_INTERNAL_ARENA_STRUCTS_A_H
 #define JEMALLOC_INTERNAL_ARENA_STRUCTS_A_H
 
+#include "jemalloc/internal/bitmap.h"
+
 struct arena_slab_data_s {
 	/* Per region allocated/deallocated bitmap. */
 	bitmap_t	bitmap[BITMAP_GROUPS_MAX];