PHPUnit 4.2 compat

- Removed ::staticExpects (see [0])
- Removed static caller where necessary (only used within SMWSQLStore3)
-- public static function findTypeTableId
-- public static function findDiTypeTableId
- SMW\Store::setupStore remains static, dropped mock instead

[0] https://github.com/sebastianbergmann/phpunit/wiki/Release-Announcement-for-PHPUnit-4.0.0#backwards-compatibility-issues
Merge pull request #326 from SemanticMediaWiki/phpunit-42-compat

PHPUnit 4.2 compat