CODETOOLS-7901491: incorrect setting param with the same name through class hierarchy

[Sergey Kuksenko]

Issue:
https://bugs.openjdk.java.net/browse/CODETOOLS-7901491

When we have benchmark class hierarchy and parameters (@Param) with same 
name in different classes of the hierarchy then:
1. JMH incorrectly save param values to BenchmarkList file. Values of 
the most super param are written for all classes
2. JMH incorrectly setup param values before execution. Only the most 
super param field is set.

Fix:
http://cr.openjdk.java.net/~skuksenko/jmh/overparam/webrev.00/

-- 
Best regards,
Sergey Kuksenko