RFR: [8u] Bulk backport to sh/jdk8u

[Roman Kennke]

> http://cr.openjdk.java.net/~shade/shenandoah/backports/jdk8u-20171114/webrev.01/
>
> Changes:
>
> rev 10168 : [backport] Disallow pinned_cset region moves and allocations during Full GC
> rev 10169 : [backport] Verifier crashes when reporting multiple forwardings
> rev 10170 : [backport] Report all GC status flags in hs_err
>
> Testing: hotspot_gc_shenandoah {fastdebug|release}
>
> Thanks,
> -Aleksey
>
Yup. Thanks!


Roman