[feature/sphinx-fulltext-search] Make different files for different classes

Break the classes in functions-sphinx.php into different files
with proper class names according to phpbb class auto loader conventions.

PHPBB3-10946

Conflicts:

	phpBB/includes/search/sphinx/config.php

phpBB/includes/search/sphinx/config_comment.php

@@ -0,0 +1,45 @@
+<?php
+/**
+*
+* @package search
+* @copyright (c) 2005 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* phpbb_search_sphinx_config_comment
+* Represents a comment inside the sphinx configuration
+*/
+class phpbb_search_sphinx_config_comment
+{
+	var $exact_string;
+
+	/**
+	* Create a new comment
+	*
+	* @param	string	$exact_string	The content of the comment including newlines, leading whitespace, etc.
+	*/
+	function __construct($exact_string)
+	{
+		$this->exact_string = $exact_string;
+	}
+
+	/**
+	* Simply returns the comment as it was created
+	*
+	* @return	string	The exact string that was specified in the constructor
+	*/
+	function to_string()
+	{
+		return $this->exact_string;
+	}
+}