Make suite.py valid JSON

mx.fastr/copyrights/overrides

+mx.fastr/suite.py,
 com.oracle.truffle.r.ffi.impl/src/com/oracle/truffle/r/ffi/impl/nodes/AsRealNode.java,gnu_r_gentleman_ihaka.copyright
 com.oracle.truffle.r.library/src/com/oracle/truffle/r/library/fastrGrid/Arrows.java,gnu_r_murrel_core.copyright
 com.oracle.truffle.r.library/src/com/oracle/truffle/r/library/fastrGrid/DoSetViewPort.java,gnu_r_murrel_core.copyright

mx.fastr/suite.py

-#
-# Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-#
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.
-#
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-#
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-#
 suite = {
   "mxversion" : "5.60.0",
   "name" : "fastr",