hg: build-infra/jdk9: Include hotspot conf files in spec.gmk, as a hack to mimick a future pure implementation in configure.

[magnus.ihse.bursie at oracle.com]

Changeset: 9dca0960541f
Author:    ihse
Date:      2015-10-09 14:40 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk9/rev/9dca0960541f

Include hotspot conf files in spec.gmk, as a hack to mimick a future pure implementation in configure.

! common/autoconf/spec.gmk.in