Update copyright to 2013
Prepare for 2.5.9 release
Fix build to rename update archives
Fix problem in SQL file
Remove install checks
Update development version to 2.5.10
# [#29970] Robots.txt check url no more working.  Thanks Brian
# [#30100] Plugins ordering broken when search filter is populated.
Thanks Jurian
 # [#29968] Only text gets passed to content events in blog view (for
Joomla 2.5.x). Thanks Jonathan.