multiple keycache fixes

mysql-test/r/fulltext.result:
  result updated

myisam/ft_dump.c

@@ -80,8 +80,11 @@ int main(int argc,char *argv[])
   if (argc < 2)
     usage();
 
+  init_key_cache(dflt_keycache,MI_KEY_BLOCK_LENGTH,USE_BUFFER_INIT,0);
+
   if (!(info=mi_open(argv[0],2,HA_OPEN_ABORT_IF_LOCKED)))
     goto err;
+  VOID(mi_extra(info, HA_EXTRA_SET_KEY_CACHE, dflt_keycache));
 
   inx=atoi(argv[1]);
   *buf2=0;

myisam/myisamchk.c

@@ -794,6 +794,7 @@ static int myisamchk(MI_CHECK *param, my_string filename)
   share->tot_locks-= share->r_locks;
   share->r_locks=0;
   raid_chunks=share->base.raid_chunks;
+  VOID(mi_extra(info, HA_EXTRA_SET_KEY_CACHE, dflt_keycache));
 
   /*
     Skip the checking of the file if:

mysql-test/r/fulltext.result

@@ -34,8 +34,8 @@ Full-text indexes	are called collections
 Only MyISAM tables	support collections
 select * from t1 where MATCH(a,b) AGAINST ("indexes collections" WITH QUERY EXPANSION);
 a	b
-Only MyISAM tables	support collections
 Full-text indexes	are called collections
+Only MyISAM tables	support collections
 MySQL has now support	for full-text search
 explain select * from t1 where MATCH(a,b) AGAINST ("collections");
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra