hg: jdk9/sandbox: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: 20453f55c71b
Author:    ihse
Date:      2017-06-20 17:46 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/20453f55c71b

Fix stylesheet link, and text updates.

! common/doc/building.html
! common/doc/building.md
! common/doc/testing.html
! make/UpdateBuildDocs.gmk

Changeset: 4550e0c7c71c
Author:    ihse
Date:      2017-06-20 20:57 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/4550e0c7c71c

Heading level flattening.
Added external libs, hardware, etc.

! common/doc/building.html
! common/doc/building.md