Formatting of for-syntax in require should add newlines

[jackfirth]

The code (require racket/list racket/hash) gets formatted into:

(require racket/list
         racket/hash)

However, if the modules are wrapped in for-syntax, they get formatted into:

(require (for-syntax racket/list racket/hash))

I think the phase-shifting require forms like for-syntax, for-template, etc. shouldn't prevent separate imported modules from being placed onto separate lines. The above ought to be this instead:

(require (for-syntax racket/list
                     racket/hash))