# used to find the location of THIS module. assumes that all support
# dirs will be under a directory named after this module (without
# the '.pm')
# NOTE! this is a class method that doesn't check the 'cached' value.
# YOU WILL BE SURPRISED if there has been an intervening chdir operation!
# see the public 'basename_dir' method for normal use.
sub _basename_dir {
    my $package = __PACKAGE__;

    $package =~ s/::/\//g;
    my $packpath = $INC{ join( '.', $package, 'pm' ) };
    $packpath =~ s/\.pm$//;

    my $realpath = Cwd::realpath($packpath);

    return $realpath;
}