Fix for Bug#43152 "Assertion `bitmap_is_set_all(&table->s->all_set)' failed in handler::ha_reset"

The reason for this was that some bitmap test functions changed the bitmap, which caused problems when the same bitmap was used by multiple threads.


include/my_bitmap.h:
  Changed order of elements to get better alignment.
mysys/my_bitmap.c:
  Change bitmap test functions to not modify the bitmap.
  Fixed compiler errors in test_bitmap

include/my_bitmap.h

@@ -25,8 +25,6 @@ typedef uint32 my_bitmap_map;
 typedef struct st_bitmap
 {
   my_bitmap_map *bitmap;
-  uint n_bits; /* number of bits occupied by the above */
-  my_bitmap_map last_word_mask;
   my_bitmap_map *last_word_ptr;
   /*
      mutex will be acquired for the duration of each bitmap operation if
@@ -36,6 +34,8 @@ typedef struct st_bitmap
 #ifdef THREAD
   pthread_mutex_t *mutex;
 #endif
+  my_bitmap_map last_word_mask;
+  uint32	n_bits; /* number of bits occupied by the above */
 } MY_BITMAP;
 
 #ifdef	__cplusplus