hg: jdk/jdk: 8214910: If pandoc is present, markdown spec files should be processed

[magnus.ihse.bursie at oracle.com]

Changeset: 2e41937c9cab
Author:    ihse
Date:      2018-12-11 15:47 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/2e41937c9cab

8214910: If pandoc is present, markdown spec files should be processed
Reviewed-by: erikj, lancea

! make/Docs.gmk