[ticket/11755] MySQL upgrader out of date

De-duplicating code from create_schema_files, mysql_upgrader.

New file phpbb/db/schema_data which contains all the current schema data.

New function in db_tools public static function get_dbms_type_map() to make the
type map available everywhere (without requiring $db be setup already)

PHPBB3-11755

phpBB/phpbb/db/tools.php

@@ -37,7 +37,16 @@ class phpbb_db_tools
 	* The Column types for every database we support
 	* @var array
 	*/
-	var $dbms_type_map = array(
+	var $dbms_type_map = array();
+
+	/**
+	* Get the column types for every database we support
+	*
+	* @return array
+	*/
+	public static function get_dbms_type_map()
+	{
+		return array(
 			'mysql_41'	=> array(
 				'INT:'		=> 'int(%d)',
 				'BINT'		=> 'bigint(20)',
@@ -278,6 +287,7 @@ class phpbb_db_tools
 				'VARBINARY'	=> 'bytea',
 			),
 		);
+	}
 
 	/**
 	* A list of types being unsigned for better reference in some db's
@@ -308,6 +318,8 @@ class phpbb_db_tools
 		$this->db = $db;
 		$this->return_statements = $return_statements;
 
+		$this->dbms_type_map = self::get_dbms_type_map();
+
 		// Determine mapping database type
 		switch ($this->db->sql_layer)
 		{