Partially fix failing tests.

Properly indent HTML inside PHP conditional, and also fix incorrectly
marked ending of conditions. When a scopeCloser is preceded by a <?php
tag we decrement the indentation to simulate the closer being at the
correct level of indentation.

Refs #34
Fix remaining known issues with inline control structures.

The built-in Squiz rules do not work well with inline control structures
in embedded PHP, copy and modify to make them more lenient.

Fixes #34