RFR: 8191420: Changing "requires" to "requires static" in an application module results in build failure

[Tim Bell]

Erik:

> This is a small fix to the module-info.java parsing logic in make to add
> support for the "requires static" construct. I also made the current
> logic a bit more robust so that it only matches keywords as stand alone
> words.
>
> Webrev: http://cr.openjdk.java.net/~erikj/8191420/webrev.01/
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8191420

Looks good.

/Tim