hg: jdk8u/jdk8u-dev: 2 new changesets

[kevin.walls at oracle.com]

Changeset: 310b1d9c5772
Author:    kevinw
Date:      2018-04-18 03:57 -0700
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/310b1d9c5772

8179079: Incremental HotSpot builds broken on Windows
Reviewed-by: erikj, tbell

! make/common/NativeCompilation.gmk

Changeset: 5912f0f784f6
Author:    kevinw
Date:      2018-04-19 08:51 +0000
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/5912f0f784f6

Merge