RFR: Don't assert Shenandoah safepoint in verifier

[Aleksey Shipilev]

On 12/08/2017 05:07 PM, Roman Kennke wrote:
> During testing with jdk9 and jdk8, I hit the assert for Shenandoah safepoint in the verifier at
> least once, presumably duing verify-before-exit. This change relaxes back to asserting any safepoint
> in verifier. Ok?
> 
> Testing: hotspot_gc_shenandoah
> 
> http://cr.openjdk.java.net/~rkennke/no-sh-sp/webrev.00/

Not really. We should instead remove "|| !UseTLAB" in ShenandoahHeap::verify_generic, if that is the
path we are going in.

-Aleksey