hg: build-infra/jdk8: Added placeholder version file for closed. Added better exclude features to JavaCompilation macro. Added optional extra manifest line to jar macro.

[erik.joelsson at oracle.com]

Changeset: feb783906a03
Author:    erikj
Date:      2012-02-21 15:58 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/feb783906a03

Added placeholder version file for closed. Added better exclude features to JavaCompilation macro. Added optional extra manifest line to jar macro.

+ common/autoconf/closed.version.numbers
! common/autoconf/configure
! common/autoconf/configure.ac
! common/makefiles/JavaCompilation.gmk