RFR [8u], 2018-04-12, Bulk backports to sh/jdk8u

[Roman Kennke]

Am 12.04.2018 um 19:23 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20180412/webrev.01/
> 
> These include observability and obvious bug fixes for our sh/jdk8u adopters:
> 
> 8aaafef81fa3: [backport] Immediate garbage ratio should not go over 100%
> 8f2338305348: [backport] Introduce assert_in_correct_region to verify object is in correct region
> 19c01678e365: [backport] FreeSet should report its internal state before/after GC cycle
> 05d109967a80: [backport] Disambiguate "upgrade to Full GC" GCause
> 626d278bcafd: [backport] Report how much we have failed to allocate during Allocation Failure
> cd9e28fa0f27: [backport] Use/sort (cached) RegionData not ShenandoahHeapRegionSet (infrastructure)
> 
> Testing: hotspot_gc_shenandoah {fastdebug|release}
> 
> Thanks,
> -Aleksey
> 

OK