• t/original.t and read_dir.t no longer search for tempdirs. they just
  use the current dir which should be in the build directory
  
• t/readdir.t renamed to read_dir.t for consistancy
  
• write_file return values are docuemented
  Thanks to Adam Kennedy adamk@cpan.org
  
• added no_clobber option to write_file and t/no_clobber.t test for it
  Thanks to pagaltzis@gmx.de
  
• fixed bug when appending a null string to a file which then
  truncates it. seems to be an odd way for linux and OS X to
  handle O_APPEND mode on sysopen. they don't seek to the end of
  the file so it gets truncated. fixed by adding a seek to the
  end if in append mode.n
  Thanks to Chris Dolan cdolan@cpan.org