hg: build-infra/jdk8: Improved compareimage and fixed all file tree diffs on windows.

[erik.joelsson at oracle.com]

Changeset: 36ac96cbda1e
Author:    erikj
Date:      2012-08-10 15:48 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/36ac96cbda1e

Improved compareimage and fixed all file tree diffs on windows.

! common/autoconf/generated-configure.sh
! common/autoconf/platform.m4
! common/bin/compareimage.sh
! common/bin/diffexec.sh
! common/makefiles/NativeCompilation.gmk