JDK 10 RFR of 8176894: Provide specialized implementation for default methods putIfAbsent, computeIfAbsent, computeIfPresent, compute in TreeMap

[Sergey Kuksenko]

Hi All,

Please, review:
https://bugs.openjdk.java.net/browse/JDK-8176894
http://cr.openjdk.java.net/~skuksenko/corelibs/utils/8176894/webrev.00/
The issue was created for JDK10 in order to don't disturb JDK9 before 
launch.

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Best regards,
Sergey Kuksenko