hg: jdk10/master: 8187543: Replace SRC_ROOT with TOPDIR

[magnus.ihse.bursie at oracle.com]

Changeset: fdac20095dff
Author:    ihse
Date:      2017-09-25 10:21 +0200
URL:       http://hg.openjdk.java.net/jdk10/master/rev/fdac20095dff

8187543: Replace SRC_ROOT with TOPDIR
Reviewed-by: erikj

! make/autoconf/basics.m4
! make/autoconf/basics_windows.m4
! make/autoconf/compare.sh.in
! make/autoconf/generated-configure.sh
! make/autoconf/spec.gmk.in
! make/scripts/compare.sh