RFR(XXS): 8188109 JVM should print a warning message that -Xshare:on may cause VM to abort start-up

[Thomas Stüfe]

<snip>

> Maybe we need -Xshare:on_and_I_really_mean_it ;-)
>
> Cheers,
> David

How about -Xshare:on, -Xshare:off and an additional diagnostic flag,
-XX:+ExitOnCDSFail. Gives you the same width of options but since
diagnostic flags have to be explicitly enabled should make most people
aware of the problem.

..Thomas

>