[ticket/12046] Use PHP_BINARY environment variable in PHP lint test.

PHPBB3-12046
Merge remote-tracking branch 'remotes/bantu/ticket/12046' into develop-olympus

* remotes/bantu/ticket/12046:
  [ticket/12046] Use PHP_BINARY environment variable in PHP lint test.
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/12046] Use PHP_BINARY environment variable in PHP lint test.