Allow PDO options to be configured. Fixes #4372
Calling Kohana::debug((string) $query)
throws an Exception: ErrorException [ Fatal Error ]: Call to undefined method Kohana::debug()
This code works.

Signed-off-by: Woody Gilk <woody.gilk@kohanaframework.org>
Merge branch '3.1/develop' into 3.2/develop
MySQL: Handle ENUM values with parentheses. Fixes #4393
Merge branch '3.1/develop' into 3.2/develop. Fixes #4394
Update @copyright notices to 2012. Fixes #4396.
Merge branch '3.1/develop' of http://github.com/kohana/database into 3.1/develop
Merge branch 3.1/develop into 3.2/develop
Use 'parameterized' rather than 'prepared' in docs. Fixes #3963
Merge branch '3.1/develop' into 3.2/develop
Ensure the table_prefix is assigned. Fixes #4033
Merge branch '3.1/develop' into 3.2/develop
handle both <> NULL and != NULL as IS NOT NULL
Merge pull request #65 from biakaveron/issue-4566-isnotnull

handle both <> NULL and != NULL as IS NOT NULL

refs #4566