RFR [10]: 2018-04-09, Bulk backports to sh/jdk10

[Roman Kennke]

Am 09.04.2018 um 11:10 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk10-20180409/webrev.01/
> 
> Includes:
> 
> 88c7dab55e27: [backport] Adapt upstream object pinning API
> ffc4775aa1da: [backport] Remove CSetThreshold handling from heuristics
> 71f1028fed44: [backport] Pacer should account allocation waste and unsuccessful pacing in the budget
> bf6915a4b6a6: [backport] Hide is_concurrent_traversal_in_progress check under the type check
> 889aec72fd97: [backport] Move ShHeap::used increment out of locked allocation path
> 2dc4c4d5a9c8: [backport] Avoid notifying about zero waste
> 
> Testing: hotspot_gc_shenandoah {fastdebug|release}
> 
> Thanks,
> -Aleksey
> 

Looks good! Thank you!

Roman