-- CRM-13446, fixed upgrade if current version is less then 4.3

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* CRM-13446: Add ON DELETE Options for constraints fails
  http://issues.civicrm.org/jira/browse/CRM-13446
Update FourThree.php
Merge pull request #1819 from pradpnayak/CRM-13446

Crm 13446
Update FourThree.php

Typo fix (mising -> missing).
CRM-13550 - API - Improve validation of options
Merge pull request #1825 from colemanw/4.3

CRM-13550 - API - Improve validation of options
CRM-13550 - API - Port 2nd patch from 4.2
CRM-13550 - API - apiv2 patch from 4.2
Merge pull request #1826 from colemanw/4.3

CRM-13550 - API - Port 2nd patch from 4.2
CRM-13625 fix - Twitter text references thankyou page with session, not info page

http://issues.civicrm.org/jira/browse/CRM-13625
Merge pull request #1830 from monishdeb/CRM-13625

CRM-13625 fix - Twitter text references thankyou page with session, not ...
Ommit urlencode modifier to escape:'url' to fix CRM tests
Merge pull request #1848 from monishdeb/CRM-13625

CRM-13625 : Ommit urlencode modifier to escape:'url' to fix CRM tests
CRM-13389, CRM-13555 - Upgrade from 4.0.* to 4.4: DB Error: no such table civicrm_setting
Merge pull request #1861 from totten/4.3-setting-warning

CRM-13389, CRM-13555 - Upgrade from 4.0.* to 4.4: DB Error: no such table civicrm_setting
CRM-13685 - "Manage Extensions" - Fix upgrade check

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* CRM-13685: "Manage Extension" screen should use "<" to determine upgradeability
  http://issues.civicrm.org/jira/browse/CRM-13685
Merge pull request #1882 from totten/4.3-mgext-upg

CRM-13685 - "Manage Extensions" - Fix upgrade check
Case API - Fix undefined index
Merge pull request #1908 from colemanw/4.3

Case API - Fix undefined index
CRM-13713: localize the display of the country/province name for custom fields.