Btrfs-progs: fix some build warnings on 32bit platform

Btrfs-progs: fix some build warnings on 32bit platform

Fix following build warnings on 32bit platform:

...
utils.c:1708:3: warning: left shift count >= width of
type [enabled by default]
   if (x << i & (1UL << 63))
   ^
qgroup-verify.c:393:9: warning: cast to pointer from integer
of different size [-Wint-to-pointer-cast]
  return (struct tree_block *)unode->aux;
         ^
qgroup-verify.c:407:38: warning: cast from pointer to integer
of different size [-Wpointer-to-int-cast]
   if (ulist_add(tree_blocks, bytenr, (unsigned long long)block, 0) >= 0)
                                      ^
cmds-restore.c:120:4: warning: format %lu expects argument of type
long unsigned int, but argument 3 has type size_t [-Wformat=]
    fprintf(stderr, "bad compress length %lu\n", in_len);
...

BTW, this patch also switches other castings with new helpers.

Signed-off-by: Wang Shilong <wangshilong1991@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>