RFR: 9+8u: Collection policy cleanups

[Zhengyu Gu]

Good to me.

-Zhengyu

On 03/21/2017 01:51 PM, Aleksey Shipilev wrote:
> Hi,
>
> This fixes a few compiler warnings that break MSVC build. First, we cannot
> stack-alloc RegionGarbage array -- we have fixed it in one place before, but not
> in the other one. Then, there are some int<->size_t conversions.
>
> Fix:
>   http://cr.openjdk.java.net/~shade/shenandoah/collection-policy-cleanup/webrev.01/
>
> This affects both 8u and 9.
>
> Testing: hotspot_gc_shenandoah with 9 and 8u.
>
> Thanks,
> -Aleksey
>