hg: jigsaw/jake: Enable building of new doclet api docs

[jonathan . gibbons]

Changeset: ca23aeeb366e
Author:    ksrini
Date:      2016-02-04 14:13 -0800
URL:       http://hg.openjdk.java.net/jigsaw/jake/rev/ca23aeeb366e

Enable building of new doclet api docs

! make/Javadoc.gmk