Request for review(M): 7017434: Tiered needs to support reprofiling

[Igor Veresov]

Tiered needs to support proper method reprofiling after deopts. The idea 
is to measure the amount of time spent additionally profiling the method 
by adding start counters to MDO. The difference between current values 
and start values is used as a measure of profile maturity.


Webrev: http://cr.openjdk.java.net/~iveresov/7017434/webrev.00/


Thanks,
igor