Crossplatform mysql_install_db script in mysql 5.5.34 on Windows

I downloaded mysql-5.5.34-win32.zip and found that there is a mysql_install_db.pl script. However, the mysql 5.5 documentation says:

mysql_install_db is a shell script and is available only on Unix platforms. (Starting with MySQL 5.6, mysql_install_db is a Perl script and can be used on any system with Perl installed.)

• https://dev.mysql.com/doc/refman/5.5/en/mysql-install-db.html

The mysql-5.5.34-linux2.6-i686.tar.gz archive contains the shell version of the mysql_install_db script.

Why does mysql 5.5.34 for Windows contain this script? Is this a problem in the 5.5 documentation?

UPD 1:

I found some comments on bugs.mysql.com that confirm that this perl script is useless for Windows:

I'm not sure if this script should run on Windows at all. Our manual clearly states: "There is no need to run the mysql_install_db script that is used on Unix."

• http://bugs.mysql.com/bug.php?id=52183

or

mysql_install_db is not supported on Windows and is planned to be removed from our Windows packages.

• http://bugs.mysql.com/bug.php?id=35105

But is there an official comment that this script is really useless on Windows?