Add {locale_file} table.
function locale_update_8010() {
$table = array(
'description' => 'File import status information for interface translation files.',
'fields' => array(
'langcode' => array(
'description' => 'Reference to the {languages}.langcode for this translation.',
'type' => 'varchar',
'length' => '12',
'not null' => TRUE,
),
'filename' => array(
'description' => 'Filename for importing the file.',
'type' => 'varchar',
'length' => 255,
'not null' => TRUE,
'default' => '',
),
'uri' => array(
'description' => 'File system path for importing the file.',
'type' => 'varchar',
'length' => 255,
'not null' => TRUE,
'default' => '',
),
'timestamp' => array(
'description' => 'Unix timestamp of the file itself from the point when it was last imported.',
'type' => 'int',
'not null' => FALSE,
'default' => 0,
),
),
'primary key' => array(
'uri',
'langcode',
),
);
db_create_table('locale_file', $table);
}