hg: jigsaw/m2: Workaround for bad clean targets

[erik . joelsson]

Changeset: 05e067d532c0
Author:    erikj
Date:      2014-10-14 14:13 +0200
URL:       http://hg.openjdk.java.net/jigsaw/m2/rev/05e067d532c0

Workaround for bad clean targets

! make/Main.gmk