CUBRID Database 9.0 Support.
Ref: converted spaces to tabs according to Yii coding conventions.
Ref: converted spaces to tabs.
Merge branch 'cubrid-database-support' of https://github.com/kadishmal/yii into kadishmal-cubrid-database-support

* 'cubrid-database-support' of https://github.com/kadishmal/yii:
  Ref: converted spaces to tabs.
  Ref: converted spaces to tabs according to Yii coding conventions.
  CUBRID Database 9.0 Support.
CUBRID copyright, version and indentation fixes

adjustments to PR #1893
Code style

adjustments to PR #1893
Merge branch 'master' of git://github.com/yiisoft/yii.git
Merge branch 'master' of git://github.com/yiisoft/yii.git
Allow sql files diff & preview in gii
Backport Request::getPreferredLanguage() from yii2
Parameter 'id' added for 'ajaxUpdateError' invoke at 'jquery.yiigridview' and 'jquery.yiilistview'
Doc comments for 'ajaxUpdateError' at 'CGridView' and 'CListView' have been updated.
Issue #2850 added to CHANGELOG
Update database.dao.txt
Merge pull request #3194 from tomekbyd/patch-1

Update database.dao.txt
Update database.arr.txt
Update database.arr.txt
Merge pull request #3195 from tomekbyd/patch-2

Update database.arr.txt
Merge remote-tracking branch 'upstream/master'
CFileValidator is no longer unsafe by default

CFileValidator is no longer unsafe by default to prevent setting
arbitrary values. Instead, when no file is uploaded attribute is set to
null (marcovtwout)