* If there is no $connection value, a server error message would be written on your server log.(PHP can not handle it.)
* r13162, r13161 has some mistake(Context::close() makes memory overload at DB close. I tested for a day... T^T;;)
git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@13166 201d5d3c-b55e-5fd7-737f-ddc643e51545