RFR: 8196783: Refactor LogTagLevelExpression into separate classes

[Per Liden]

Looks good to me.

/Per

On 02/14/2018 09:44 AM, Marcus Larsson wrote:
> Hi,
> 
> Please review the following patch to split up LogTagLevelExpression into 
> two separate classes: LogSelection and LogSelectionList.
> 
> Issue:
> https://bugs.openjdk.java.net/browse/JDK-8196783
> 
> Webrev:
> http://cr.openjdk.java.net/~mlarsson/8196783/webrev.00
> 
> Tested with hs-tier 1-2.
> 
> Thanks,
> Marcus
>