hg: jdk9/sandbox: 8137014: Various improvements in build infrastructure

[chris.hegarty at oracle.com]

Changeset: f2b50d16adc9
Author:    ihse
Date:      2015-09-25 08:58 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/f2b50d16adc9

8137014: Various improvements in build infrastructure
Reviewed-by: erikj
Contributed-by: Magnus Ihse Bursie <magnus.ihse.bursie at oracle.com>, Erik Joelsson <erik.joelsson at oracle.com>

! common/bin/compare.sh
! make/Init.gmk
! make/InitSupport.gmk
! make/common/JavaCompilation.gmk
! make/common/NativeCompilation.gmk