Extension:CentralNotice/cn notice countries table

nc_notice_id
Primary key.

nc_country
Primary key.

Schema summary
mysql> describe cn_notice_countries; +--+--+--+-+-+---+ +--+--+--+-+-+---+ +--+--+--+-+-+---+
 * Field       | Type             | Null | Key | Default | Extra |
 * nc_notice_id | int(10) unsigned | NO  | PRI | NULL    |       |
 * nc_country  | varbinary(2)     | NO   | PRI | NULL    |       |