Review request: flush the output streams before OnError commands

[Vladimir Kozlov]

When -XX:+SuppressFatalErrorMessage the log files will not be flushed.

Vladimir

Chuck Rasbold wrote:
> I've found the LogCompilation files incomplete when a JIT crashes and 
> OnError is used to move the files.
> 
> http://cr.openjdk.java.net/~rasbold/OnError/webrev.00
> 
> NoBugId: 
> Contributed-by: rasbold at google.com <mailto:rasbold at google.com>
> 
> When the VM aborts, flush the output streams before OnError commands are 
> processed.
> 
>