hg: jigsaw/jake: update javadoc to support -addmods -limitmods

[jonathan . gibbons]

Changeset: 9b60f19f818d
Author:    jjg
Date:      2016-02-08 15:36 -0800
URL:       http://hg.openjdk.java.net/jigsaw/jake/rev/9b60f19f818d

update javadoc to support -addmods -limitmods

! make/Javadoc.gmk