tree 4b9be7bd71a56caf18b724fa7764950eeb4ffff5
parent 1c7a6b72a9f8daff448f973c10cf5c2076c33ea4
parent 760f5401a046bf4f03f52300af30d502fc4e6170
author Xin Li <delphij@google.com> 1554928924 -0700
committer Xin Li <delphij@google.com> 1554928924 -0700

Sync with upstream up to revision 76844b29, important fixes:

 - Restore the ability of checking and fixing next free
  cluster in FSINFO.
 - Restore lfcl when LOSTDIR's chain was corrupted and
   overwritten with invalid value.
 - Implement checking of `.' and `..' entries of
   a subdirectory.

Change-Id: Ieddc11136f23a4118a25f539657962786303f911