Fix version comparison in com_installer database view
Change version comparison from smaller to unequal
Adding auth_update to old downloadpackage code, not using JHttp
Merge remote-tracking branch 'joomla-cms/2.5.x' into auth_update_2.5.x

Conflicts:
	libraries/joomla/installer/helper.php
Updated to latest 2.5.x Joomla! dev branch
Update warnings.php

Extension Manager should not display a warning about PHP memory limit if memory_limit is set to -1
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=33236
fix for Notice: Undefined variable: nowDate

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=33248&start=8425
Merge pull request #3085 from vdespa/patch-3

fix for Notice: Undefined variable: nowDate
Merge pull request #2147 from Hackwar/inst_version_comp_25

Fixing com_installer database view version compare
Merge pull request #3083 from toivo/patch-3

Update warnings.php
Update checkin.php

Fixed checking of user rights.
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_id=8103&tracker_item_id=33265
Merge pull request #3101 from izmailow/patch-1

Update checkin.php
Use getCode() as is done in line 797 (Fix #2820)
Merge pull request #2793 from shumisha/auth_update_2.5.x

 Improved Joomla! extensions update handling of paid for extensions to Joomla 2.5.x