[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_variable.php

@@ -0,0 +1,72 @@
+<?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_variable
+* Represents a single variable inside the sphinx configuration
+*/
+class phpbb_search_sphinx_config_variable
+{
+	var $name;
+	var $value;
+	var $comment;
+
+	/**
+	* Constructs a new variable object
+	*
+	* @param	string	$name		Name of the variable
+	* @param	string	$value		Value of the variable
+	* @param	string	$comment	Optional comment after the variable in the
+	*								config file
+	*/
+	function __construct($name, $value, $comment)
+	{
+		$this->name = $name;
+		$this->value = $value;
+		$this->comment = $comment;
+	}
+
+	/**
+	* Getter for the variable's name
+	*
+	* @return	string	The variable object's name
+	*/
+	function get_name()
+	{
+		return $this->name;
+	}
+
+	/**
+	* Allows changing the variable's value
+	*
+	* @param	string	$value	New value for this variable
+	*/
+	function set_value($value)
+	{
+		$this->value = $value;
+	}
+
+	/**
+	* Turns this object into a string readable by sphinx
+	*
+	* @return	string	Config data in textual form
+	*/
+	function to_string()
+	{
+		return "\t" . $this->name . ' = ' . str_replace("\n", "\\\n", $this->value) . ' ' . $this->comment . "\n";
+	}
+}