FILTER_VALIDATE_DOMAIN and RFC conformance for FILTER_VALIDATE_URL
Fix filter_list test
Fix ext/filter/tests/033.phpt
New label length test
Merge branch 'pull-request/826'

* pull-request/826:
  New label length test
  Fix ext/filter/tests/033.phpt
  Fix filter_list test
  FILTER_VALIDATE_DOMAIN and RFC conformance for FILTER_VALIDATE_URL