FatFS release R0.10a

  Jan 15,'14 R0.10a    Added arbitrary strings as drive number in the path name. (_STR_VOLUME_ID)
                       Added a configuration option of minimum sector size. (_MIN_SS)
                       2nd argument of f_rename() can have a drive number and it will be ignored.
                       Fixed f_mount() with forced mount fails when drive number is >= 1.
                       Fixed f_close() invalidates the file object without volume lock.
                       Fixed f_closedir() returns but the volume lock is left acquired.
                       Fixed creation of an entry with LFN fails on too many SFN collisions.

From http://elm-chan.org/fsw/ff/ff10a.zip
-rw-r--r-- 1 pab pab 907427 Mar  8 08:05 /tmp/ff10a.zip
92421d388328be179b6bcaed5c898d6c  ff10a.zip
Patch 1: February 15, 2014

A hard error in the low level disk function can collapse the FAT structure in case of
following situation.

1. If the FIRST write operation after the file created failed due to a hard error in the
   create_chain(), the f_write() function returns FR_DISK_ERR and the file object is aborted.
2. Close the aborted file.
3. And the file gets inaccessble. Read/write operation to the file will be rejected with
   FR_INT_ERR because the directory entry has an invalid start cluster value.