hg: jigsaw/jigsaw/jdk: (module file format) Adapted and reapplied fix for empty directories

[dalibor.topic at sun.com]

Changeset: e18906a151fd
Author:    robilad
Date:      2010-05-28 00:20 +0200
URL:       http://hg.openjdk.java.net/jigsaw/jigsaw/jdk/rev/e18906a151fd

(module file format) Adapted and reapplied fix for empty directories

! src/share/classes/org/openjdk/jigsaw/ModuleFileFormat.java