hg: jdk9/sandbox: 8136385: Various build speed improvements for windows

[chris.hegarty at oracle.com]

Changeset: 216f63a10515
Author:    erikj
Date:      2015-09-28 11:39 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/rev/216f63a10515

8136385: Various build speed improvements for windows
Reviewed-by: ihse

! make/common/JavaCompilation.gmk
! make/common/MakeBase.gmk
! make/common/NativeCompilation.gmk
! test/make/TestMakeBase.gmk