hg: jdk9/sandbox: Rename the support/demo directory to demos.

[magnus.ihse.bursie at oracle.com]

Changeset: 5735c36e5a06
Author:    ihse
Date:      2015-11-02 15:10 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/5735c36e5a06

Rename the support/demo directory to demos.

! make/Images.gmk
! make/Main.gmk
! make/MainSupport.gmk