(13) RFR (S): 8227055: Minor edits to launcher help text

[Mandy Chung]

On 7/2/19 3:44 PM, David Holmes wrote:
> webrev: http://cr.openjdk.java.net/~dholmes/8227055/webrev/
> bug: https://bugs.openjdk.java.net/browse/JDK-8227055
>
> The launcher help text needs some minor updates/corrections
> - -verbose needs more info
> - -Xdebug needs to say it does nothing

Should this be removed instead?

> - -Xloggc is deprecated and replaced by -Xlog:gc:filename

I think it can just list -Xlog:gc<file> (the replacement) and no need
to mention the deprecated option in the launcher help message.

> - -Xshare:on needs warning about use
>
> Reference to Mac OS X should be macOS.
>
> The --disable- at files is documented as both a standard and extra option.
>

I think this is intended to be an extra option.

Otherwise, looks okay.

Mandy

> This aligns the help info with the Java manpage info.
>
> Thanks,
> David