Automatic replacement of 8-pool by the specific version

[Sergey Bylokhov]

Hello,

I few years ago the "Fix Version" equal to 8-pool is automatically updated by the hgupdater to the 
specific version. For example https://bugs.openjdk.org/browse/JDK-8266348 where "8-pool" was 
replaced by the "8u311". But looks like now it stopped working: 
https://bugs.openjdk.org/browse/JDK-8293461, note that a new backport was created for 
"openjdk8u362". Is it intentional change or it is a bug somewhere?

-- 
Best regards, Sergey.