Merge mysql.com:/home/mydev/mysql-4.0-4000

into  mysql.com:/home/mydev/mysql-4.1-4100


include/my_sys.h:
  Bug#12920 - key_read_requests counter appears to re-set
  Manual merge requiring after merge fix.
myisam/mi_test2.c:
  Bug#12920 - key_read_requests counter appears to re-set
  Manual merge requiring after merge fix.
mysys/mf_keycache.c:
  Bug#12920 - key_read_requests counter appears to re-set
  Manual merge requiring after merge fix.
sql/mysqld.cc:
  Bug#12920 - key_read_requests counter appears to re-set
  Manual merge requiring after merge fix.
sql/sql_test.cc:
  Bug#12920 - key_read_requests counter appears to re-set
  Manual merge requiring after merge fix.

include/my_sys.h

@@ -216,8 +216,8 @@ extern CHARSET_INFO *all_charsets[256];
 extern CHARSET_INFO compiled_charsets[];
 
 /* statistics */
-extern ulong	my_cache_w_requests, my_cache_write, my_cache_r_requests,
-		my_cache_read;
+extern ulonglong    my_cache_w_requests, my_cache_write;
+extern ulonglong    my_cache_r_requests, my_cache_read;
 extern ulong	my_blocks_used, my_blocks_changed;
 extern ulong	my_file_opened,my_stream_opened, my_tmp_file_created;
 extern uint	mysys_usage_id;

myisam/mi_test2.c

@@ -834,14 +834,14 @@ int main(int argc, char *argv[])
 #if 0
     printf("key cache status: \n\
 blocks used:%10lu\n\
+not flushed:%10lu\n\
 w_requests: %10lu\n\
 writes:     %10lu\n\
 r_requests: %10lu\n\
 reads:      %10lu\n",
-	   my_blocks_used,
-           my_cache_w_requests, my_cache_write,
-	   my_cache_r_requests, my_cache_read);
-#endif
+           my_blocks_used, my_blocks_changed,
+           (ulong) my_cache_w_requests, (ulong) my_cache_write,
+           (ulong) my_cache_r_requests, (ulong) my_cache_read);
   }
   end_key_cache(dflt_key_cache,1);
   if (blob_buffer)