RFR: 7902450: add option which allows to merge all regions from the same method in perfasm output

[Eric Caspole]

I'm not a JMH committer but I think this is a good idea, looks good.
Eric

On 4/12/19 19:37, Sergey Kuksenko wrote:
> Hi,
> 
> Please review patch:
> 
> https://bugs.openjdk.java.net/browse/CODETOOLS-7902450
> 
> http://cr.openjdk.java.net/~skuksenko/jmh/7902450/webrev.00/
> 
> 
>