RFR: shenandoah_assert_correct should check object/forwardee klasses

[Roman Kennke]

Am 23.08.2018 um 21:01 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/assert-check-klasses/webrev.01/
> 
> This helped me to nail the bug in evac assists. Makes fastdebug a little slower, but it is worth it.
> 
> Testing: tier3_gc_shenandoah (in progress)
> 
> Thanks,
> -Aleksey
> 

Yep. thanks!!

Roman