hg: jigsaw/jake/jdk: 8177844: Ensure non-upgradeable modules cannot be upgraded even with --patch-module

[mandy.chung at oracle.com]

Changeset: b2160414fe8c
Author:    mchung
Date:      2017-04-08 10:21 -0700
URL:       http://hg.openjdk.java.net/jigsaw/jake/jdk/rev/b2160414fe8c

8177844: Ensure non-upgradeable modules cannot be upgraded even with --patch-module
Reviewed-by: alanb

! src/java.base/share/classes/java/lang/module/Resolver.java
! test/tools/launcher/modules/patch/systemmodules/PatchSystemModules.java