patch applied (packages/directory): FIX #1280: getPermissions wasn't working on Vista

[Simon Marlow]

Thu Aug 23 04:16:05 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * FIX #1280: getPermissions wasn't working on Vista
  It turns out that _access() in the Windows C runtime used to ignore
  the X_OK flag, in Vista it now returns an error.  After browsing the C
  runtime sources, I discovered that _stat() has an almost but not quite
  completely bogus implementation of the st_mode field, which lets us
  implement a slightly less incorrect approximation to getPermissions than does
  _access().

    M ./System/Directory.hs +25
    M ./include/HsDirectory.h +1