RFR: 8068942: Improve validation of -XX:G1ConfidencePercent value

[Thomas Schatzl]

Hi Kim,

On Tue, 2015-01-27 at 20:35 -0500, Kim Barrett wrote:
> Please review this improvement to the handling of the
> G1ConfidencePercent command line option.
> 
> I will need a sponsor for this change.

I can sponsor the change.

> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8068942
> 
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/8068942/webrev

  in the test, instead of mentioning that there are more flags that need
to be fixed, could you file a CR? (And remove the comment).

Looks good otherwise.

Thanks a lot,
  Thomas