[ticket/14875] Add method for raw input to request and add to installer

A method for retrieving raw input has been added to the request class.
This will be used in the installer to retrieve the datatabase password
while also allowing utf8 characters. Not escaping the input is ok in
this case as it won't be put anywhere in this raw form and only be
used to populate the entry for the password field in config.php.

PHPBB3-14875

phpBB/phpbb/install/helper/iohandler/cli_iohandler.php

@@ -74,6 +74,20 @@ class cli_iohandler extends iohandler_base
 		return $result;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get_raw_input($name, $default)
+	{
+		return $this->get_input($name, $default, true);
+	}
+
+	/**
+	 * Set input variable
+	 *
+	 * @param string $name Name of input variable
+	 * @param mixed $value Value of input variable
+	 */
 	public function set_input($name, $value)
 	{
 		$this->input_values[$name] = $value;