[gjs: 7/7] Merge branch 'refactor-object-instance' into 'master'

[Cosimo Cecchi <cosimoc src gnome org>]

commit 1d1a0fb7862ef25f75acbf2f0e37b05c91568bf6
Merge: 841a565a 3f7bce56
Author: Cosimo Cecchi <cosimo cecchi gmail com>
Date:   Mon Jun 11 01:09:11 2018 +0000

    Merge branch 'refactor-object-instance' into 'master'
    
    Refactor ObjectInstance into C++ class
    
    See merge request GNOME/gjs!158

 gi/object.cpp                                      | 1762 +++++++++++---------
 gjs/jsapi-util-root.h                              |    5 +-
 gjs/jsapi-util.h                                   |    2 +-
 installed-tests/js/testGObjectDestructionAccess.js |    2 +-
 4 files changed, 977 insertions(+), 794 deletions(-)
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