hg: jigsaw/m2: Implemented support for Gensrc-jdk.dev.gmk in multiple repos

[erik . joelsson]

Changeset: 065d58d7f2a3
Author:    erikj
Date:      2014-10-16 15:52 +0200
URL:       http://hg.openjdk.java.net/jigsaw/m2/rev/065d58d7f2a3

Implemented support for Gensrc-jdk.dev.gmk in multiple repos

! make/Main.gmk
! make/MakeHelpers.gmk