Add Archive_Tar class to lib/

Some AUR setups do not have PEAR available. While other setups
have access to outdated Archive_Tar versions. Avoid these
problems completely by including the necessary files for
Archive_Tar in lib/.

Remove Archive_Tar requirement from INSTALL doc.

Signed-off-by: canyonknight <canyonknight@gmail.com>

INSTALL

@@ -51,17 +51,6 @@ Setup on Arch Linux:
    If those php extensions are separate packages on your system, install
    them.
 
-   AUR requires PEAR and the Archive_Tar module (version > 1.3.7).
-   Installing PEAR will vary depending on the system and may already
-   be included with PHP. You can also find it in the PHP source
-   distribution.
-
-   PHP sources: http://www.php.net/downloads.php
-   Archive_Tar PEAR module: http://pear.php.net/package/Archive_Tar
-
- - Install the Archive_Tar PEAR package:
-   # pear install Archive_Tar
-
 6) Configure MySQL
  - Start the MySQL service. Example:
    # /etc/rc.d/mysqld start

web/lib/Archive/PEAR5.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * This is only meant for PHP 5 to get rid of certain strict warning
+ * that doesn't get hidden since it's in the shutdown function
+ */
+class PEAR5
+{
+    /**
+    * If you have a class that's mostly/entirely static, and you need static
+    * properties, you can use this method to simulate them. Eg. in your method(s)
+    * do this: $myVar = &PEAR5::getStaticProperty('myclass', 'myVar');
+    * You MUST use a reference, or they will not persist!
+    *
+    * @access public
+    * @param  string $class  The calling classname, to prevent clashes
+    * @param  string $var    The variable to retrieve.
+    * @return mixed   A reference to the variable. If not set it will be
+    *                 auto initialised to NULL.
+    */
+    static function &getStaticProperty($class, $var)
+    {
+        static $properties;
+        if (!isset($properties[$class])) {
+            $properties[$class] = array();
+        }
+
+        if (!array_key_exists($var, $properties[$class])) {
+            $properties[$class][$var] = null;
+        }
+
+        return $properties[$class][$var];
+    }
+}