Adds support for legacy Invision Power Board 3.x passwords imported in the format
$ipb3$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxYYYYY
where xxxx... is the MD5 password hash and YYYYY is the password salt.
Copy the extension to phpBB/ext/digitalmzx/ipb3password
Go to "ACP" > "Customise" > "Extensions" and enable the "IP.Board 3 Password Driver" extension.