Added "phpInclude" and "phprequire" tasks

Added two additional tasks (&lt;phpinclude&gt; and &lt;phprequire&gt;). I believe that these tasks can be used instead of the &lt;includepath&gt; task. In my use case, when using Composer, it is easier for me to do &lt;phpinclude file="vendor/autoload.php"&gt; than to use "includepath" multiple times for many of the PHP tools (phpmd, phpcpd, etc.).