hg: build-infra/jdk8: Added quotes around BOOT_JDK to make the path work on Windows

[fredrik.ohrstrom at oracle.com]

Changeset: 6719f13ec3aa
Author:    ohrstrom
Date:      2012-04-18 22:26 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/6719f13ec3aa

Added quotes around BOOT_JDK to make the path work on Windows
when it contains spaces.

Contributed by: aboehme at live.de

! common/autoconf/configure
! common/autoconf/configure.ac