[5.6] Allows array or multiple params for hasAny helper

[themsaid]

Resubmission of #22919 to 5.6 branch

[bbashy]

Thanks for doing that

[sisve]

This merge worries me extremely. We clearly showed, in the previous PR, that this change of logic changes/removes existing functionality. WHAT will it break? What syntax, and how has it been documented in the upgrade guide? How will $request->hasAny(['a', 'b']) change between Laravel 5.5 and Laravel 5.6?

I'm worried that this will only show up as an entry in the changelog saying "Allows array or multiple params for hasAny helper", but we already allowed arrays and multiple parameters before this change.