Follows proper autoloading standards (#3123)

* Follows proper autoloading standards
 - Splits PHP classes in descriptor.php into separate files
 - Splits MapFieldIter and RepeatedFieldIter into separate files
 - Moves descriptor.php to Internal/functions.php
 - Moves all namespaced functions into Iternal/functions.php

* fixes Makefile.am for added php files

* [PHP] moves all functions to GPBUtil

* removes description.php from the makefile

1 files changed, 0 insertions, 80 deletions

diff --git a/php/src/Google/Protobuf/Internal/RepeatedField.php b/php/src/Google/Protobuf/Internal/RepeatedField.php
index 2ad4709a..797b3b3a 100644
--- a/php/src/Google/Protobuf/Internal/RepeatedField.php
+++ b/php/src/Google/Protobuf/Internal/RepeatedField.php
@@ -41,86 +41,6 @@ use Google\Protobuf\Internal\GPBType;
 use Google\Protobuf\Internal\GPBUtil;
 
 /**
- * RepeatedFieldIter is used to iterate RepeatedField. It is also need for the
- * foreach syntax.
- */
-class RepeatedFieldIter implements \Iterator
-{
-
-    /**
-     * @ignore
-     */
-    private $position;
-    /**
-     * @ignore
-     */
-    private $container;
-
-    /**
-     * Create iterator instance for RepeatedField.
-     *
-     * @param RepeatedField The RepeatedField instance for which this iterator
-     * is created.
-     * @ignore
-     */
-    public function __construct($container)
-    {
-        $this->position = 0;
-        $this->container = $container;
-    }
-
-    /**
-     * Reset the status of the iterator
-     *
-     * @return void
-     */
-    public function rewind()
-    {
-        $this->position = 0;
-    }
-
-    /**
-     * Return the element at the current position.
-     *
-     * @return object The element at the current position.
-     */
-    public function current()
-    {
-        return $this->container[$this->position];
-    }
-
-    /**
-     * Return the current position.
-     *
-     * @return integer The current position.
-     */
-    public function key()
-    {
-        return $this->position;
-    }
-
-    /**
-     * Move to the next position.
-     *
-     * @return void
-     */
-    public function next()
-    {
-        ++$this->position;
-    }
-
-    /**
-     * Check whether there are more elements to iterate.
-     *
-     * @return bool True if there are more elements to iterate.
-     */
-    public function valid()
-    {
-        return isset($this->container[$this->position]);
-    }
-}
-
-/**
  * RepeatedField is used by generated protocol message classes to manipulate
  * repeated fields. It can be used like native PHP array.
  */