[8u] Request for approval for bulk changes from 8u172 fixes into 8u

[Abhijit Saha]

8u172 has been released earlier today [1]. Requesting approval to sync 
up the 8u172 changes into the jdk8u forest.

Webrev: http://cr.openjdk.java.net/~asaha/openJDK.8u172-8u192.sync/webrev



Thanks
Abhijit


[1] http://www.oracle.com/technetwork/java/javase/downloads/index.html


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