Fix bug #67111

Loop variables need to be freed for both "break" and "continue".

I'm adding the test to Zend/ because it's good to have a test for
this even without opcache.
Merge branch 'PHP-5.5' into PHP-5.6
Merge branch 'PHP-5.6'

Conflicts:
	ext/opcache/Optimizer/pass2.c
Use "float" and "integer" in typehint and zpp errors