Prevent require_once()'d file from echoing its shebang as first line of output.
Prevent require_once()'d file from echoing its shebang as first line of output.

Resolves an edge case where a parent php process (the one calling the phpcs
wrapper script) is not started in quiet mode resulting in the shebang of the
actual phpcs script being shown as the first line of output. This is an addition
to pull request #1250 and issue #1249.

dguyon/homebrew-php,ablyler/homebrew-php,mkalkbrenner/homebrew-php,TomK/homebrew-php,philcook/homebrew-php