Make lazy mkdir more robust.

Make lazy mkdir more robust.

Linus Torvalds <torvalds@osdl.org> wrote:

  It's entirely possible that we should just make that whole

	  if (ret == ENOENT)

  go away. Yes, it's the right error code if a subdirectory is missing, and
  yes, POSIX requires it, and yes, WXP is probably just a horrible piece of
  sh*t, but on the other hand, I don't think git really has any serious
  reason to even care.