ChangeLog, unix.c:

ChangeLog, unix.c:
  unix.c (check_if_skip): Move the "not cleanly mounted" check ahead of
  	the maximal mount and too long since checked tests.
  (reserve_stdio_fds): Make sure 0,1,2 file descriptors are open, so
  	that we don't open the filesystem using the same file
  	descriptor as stdout or stderr.