# Internal routine to force a temp file to be writable after
# it is created so that we can unlink it. Windows seems to occassionally
# force a file to be readonly when written to certain temp locations
sub _force_writable {
  my $file = shift;
  my $umask = umask();
  umask(066);
  chmod 0600, $file;
  umask($umask) if defined $umask;
}