[8u] Request for approval: 8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries

[Stefan Karlsson]

Hi,

I’d like to get approval for the backport of the fix for JDK-8058563 to 8u.

The backport involved non-trivial changes to the JDK 9 patch. These 
changes have been reviewed on the hotspot-dev list:
8058563: InstanceKlass::_dependencies list isn't cleared from empty 
nmethodBucket entries

Thanks,
StefanK