hg: jigsaw/m2/hotspot: Remove the extension mechanism

[mandy.chung at oracle.com]

Changeset: cfb878035fe3
Author:    mchung
Date:      2014-11-03 14:09 -0800
URL:       http://hg.openjdk.java.net/jigsaw/m2/hotspot/rev/cfb878035fe3

Remove the extension mechanism

! src/share/vm/runtime/arguments.cpp
! src/share/vm/runtime/arguments.hpp
! src/share/vm/runtime/globals.hpp