RFR: 8189102: All tools should support -?, -h and --help

[Weijun Wang]

I am OK with all commands supporting --help, but I am not sure if every tool should show it on the help screen if the tools's other options are still using the old single-"-" style. It looks like the tools are half-converted.

Is there a timetable to add "--" support to all tools?

Thanks
Max

> On Nov 17, 2017, at 7:23 PM, Lindenmaier, Goetz <goetz.lindenmaier at sap.com> wrote:
> 
> Hi,
> 
> please review this change. I also filed a CSR for this:
> http://cr.openjdk.java.net/~goetz/wr17/8189102-helpMessage/webrev.02/
> Bug: https://bugs.openjdk.java.net/browse/JDK-8189102
> CSR: https://bugs.openjdk.java.net/browse/JDK-8191477
> 
> See the webrev for a detailed description of the changes.
> 
> If required, I'll make break-out changes to be reviewed separately.
> 
> I had posted a RFR before, but improved the change to 
> give a more complete overview of currently supported flags
> for the CSR:
> http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-October/028615.html
> 
> Best regards,
>  Goetz.
>