db_load_balancer.php

Fixes INP-1796 - Add method for setting database error handler

Differential Revision: http://qa.in-portal.org/D394

Fixes INP-1762 - Destroy query object before logging

Differential Revision: http://qa.in-portal.org/D359

Fixes INP-1766 - Change "kDBLoadBalancer::openConnection" to always update last used connection index

Differential Revision: http://qa.in-portal.org/D363

Fixes INP-1577 - CS fix all variable type comment

Differential Revision: http://qa.in-portal.org/D240

[backported] Fixes INP-1635 - Create IDBConnection interface

Conflicts:

• core/kernel/db/db_connection.php
• core/kernel/utility/unit_config.php

[backported] Fixes INP-1621 - Migrate to MySQLi Driver

Conflicts:

• core/kernel/db/db_connection.php
• core/kernel/utility/temp_handler.php

Fixes #0001003: Logging engine

INP-811

Bug #0001234: Improvements to kDBConnection class (iterator, kDBConnectionDebug class)

1. adds GetColIterator method

2. replaces mysql_fetch_array to mysql_fetch_assoc method call inside iterators

INP-1009

Bug #0001234: Improvements to kDBConnection class (iterator, kDBConnectionDebug class)

1. ensures, that GetIterator method would be called on slave connections only

INP-1009

Bug #0000268: Code Cleanup in 5.2.x branch

1. removing references ("&") in code (makeClass & recallObject methods)

INP-224

Fixes #0000065: Add "Maintenance Mode" option for Website

INP-53

Fixes #0001180: Improvement of "qstr" function

INP-958

Bug #0000268: Code Cleanup in 5.2.x branch

1. adding missing license/FULL_PATH constant checks (against direct PHP file opening from web-browser)

INP-224

Fixes #0000576: Separating Database Master/Slave Requests

INP-457