[gjs] (9 commits) Non-fast-forward update to branch master.windows

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'master.windows' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  777ce03... gi/*.h: Be clear about the templates used with friend class
  016d97f... Fix building of gjs_profiler_chain_signal() on Windows
  d9b255e... gjs/debugger.cpp: Fix build on Windows
  ba5cd44... gjs/context.cpp: Build heap dumping only on UNIX
  d61ccad... win32/NMake: Require Visual Studio 2017 15.6 or later
  ed7d6de... gi/[arg|object].cpp: Avoid ambiguity in smart pointers
  a04bf8a... gjs-util.c: Fix building gjs_open_bytes() on Windows
  c65d618... gjs: Avoid ambiguity in smart pointers
  29e0d33... gjs: Work around Visual Studio 2017 bug

Commits added to the branch:

  f6f015c... win32/NMake: Require Visual Studio 2017 15.6 or later
  46d55b9... gi/*.h: Be clear about the templates used with friend class
  59a41eb... Fix building of gjs_profiler_chain_signal() on Windows
  c41ef40... gjs/debugger.cpp: Fix build on Windows
  9117b88... gjs/context.cpp: Build heap dumping only on UNIX
  a7f8d2b... gi/[arg|object].cpp: Avoid ambiguity in smart pointers
  8b6bb03... gjs-util.c: Fix building gjs_open_bytes() on Windows
  ee14529... gjs: Avoid ambiguity in smart pointers
  300ecfb... gjs: Work around Visual Studio 2017 bug