http://jira.cubrid.org/browse/APIS-658

bit has special syntax for storing and retreiving so we'd need a
converter for that.
Storing 1 bit will result in one byte left padded on the disc so the
result of a query for boolean 0 will be 0x00 and for boolean 1 will be
0x80.

this allows different implementation in different DBMS

CUBRID does not supprt PDO::TYPE_BOOL, so we use STRING here which will
be casted by the DBMS

See discussion about exceptions in autoloader here:
https://groups.google.com/forum/?fromgroups#!topic/php-fig/kRTVRSIJ0qE

type is array in PHP documentation

* 'master' of github.com:yiisoft/yii2:
  Removed Yii::import().

Added hasMethod() to Component and Object class

this allows implementing __call() in behaviors

See this forum topic for details:
http://www.yiiframework.com/forum/index.php/topic/46629-invoke-behavior-method-through-php-magic-method-call-dosent-work/

return false, not null

* 'master' of github.com:yiisoft/yii2:
  Reverted  changeset 595ac6d0
  Fixes #833: added charset to json response.

* 'master' of github.com:yiisoft/yii2:
  Fixes #829: loginRequired now responds with HTTP 403 in case of AJAX or loginUrl is not set (reverted from commit c2c12a90)
  add missing return to module template
  Update module.php
  Fixes #829: loginRequired now responds with HTTP 403 in case of AJAX or loginUrl is not set
  gii form width adjustment.
  Make sure query cloning works as expected.
  Fixed test break.
  Fixes #828: refactored QueryBuilder::build()

- rename FileHelper::mkdir for API consistency
- changed default permission for directories to 775 instead of 777
- added some properties to classes that deal with files to allow control
  over directory permissions.

Fixes #829: loginRequired now responds with HTTP 403 in case of AJAX or loginUrl is not set (reverted from commit c2c12a90)