title: mod rewrite to IIS rewrite rule issue
body: <p>Hi im getting these errors when im trying to to convert this file in IIS mod_rewrite</p>
  
  <blockquote>
    <p>This directive was not converted because it is not supported by IIS:
    RewriteBase /php-login/</p>
  </blockquote>
  
  <p>And</p>
  
  <blockquote>
    <p>The condition pattern is not supported: -l</p>
  </blockquote>
  
  <pre><code>Options -MultiViews
  RewriteEngine On
  RewriteBase /php-login/
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-l
  RewriteRule ^(.+)$ index.php?url=$1 [QSA,L]
  </code></pre>
  
  <p>Here it is in XML view with the errors please have a look at the errors</p>
  
  <pre><code>&lt;rewrite&gt;
  &lt;!--This directive was not converted because it is not supported by IIS: RewriteBase /php-login/.--&gt;
  &lt;rules&gt;
  &lt;rule name="Imported Rule 1" stopProcessing="true"&gt;
  &lt;match url="^(.+)$" ignoreCase="false" /&gt;
  &lt;conditions&gt;
  &lt;add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" /&gt;
  &lt;add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" /&gt;
  &lt;!--The condition pattern is not supported: -l.--&gt;
  &lt;/conditions&gt;
  &lt;action type="Rewrite" url="index.php?url={R:1}" appendQueryString="true" /&gt;
  &lt;/rule&gt;
  &lt;/rules&gt;
  &lt;/rewrite&gt;
  </code></pre>