Closing tags fix for #228

Fix for #228.

- Rewrite php_closing_tag fixer to use tokens
- Fix closing tags in code with short open tag as well, works only if short_open_tag is enabled
- Extend utests for php_closing_tag fixer
- Add Tokens::findGivenKind method to find given tokens occurrence
- Try to enabled short_open_tag in php.ini
1. I would not change it (it looks like a template)
2. Nothing to change here as ?> is not at the end
3. Looks like a template as well, so no changes.
4. No change, ?> is not at the end