[atkmm] (24 commits) Non-fast-forward update to branch master.nmake

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

The branch 'master.nmake' 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:

  1cd0318... build: Rename MSVC_Net2017 to MSVC_NMake
  dd9f8aa... build: Split out GNU-specific syntax from atk/atkmm/filelis
  be7ca81... build: Add NMake Makefiles for Visual Studio builds
  8d54ce2... build: Remove the Visual Studio 2017 projects

Commits added to the branch:

  bb141d5... Text, EditableText: Use vector instead of SListHandle<>. (*)
  eba8200... Replace remaining uses of Glib::ArrayHandle<> with vector. (*)
  9ae05e7... Use glibmm-2.54 instead of glibmm-2.52 (*)
  287e463... 2.25.2 (*)
  5621f5a... Visual Studio builds: Update glibmm ABI version (*)
  5c9556e... Fix build when _WRAP_ENUM generates enum class (*)
  e79f3f6... Relation: Change RelationType to Relation::Type. (*)
  f288ef4... Text: Move enums into the class. (*)
  c6ecc83... 2.53.3 (*)
  5b429d3... Text: Plug memory leaks in get_text_vfunc() and get_selecti (*)
  e4cf3cf... Use glibmm-2.56 instead of glibmm-2.54. (*)
  c8580a2... 2.25.4 (*)
  7e70dd7... generate_defs_and_docs.sh: Update for atk built with meson (*)
  8fb07dc... Regenerate atk_docs.xml and the .defs files (*)
  e04132e... Update .gitignore (*)
  ebd17ed... Update codegen/generate_defs_and_docs.sh (*)
  f22c292... Regenerate atk_signals.defs and atk_signals.defs.patch (*)
  ace4ccb... Object, Text: Add detail_name to some _WRAP_SIGNAL()s (*)
  f73568f... Change ABI to atkmm-2.28 (*)
  10d384e... 2.27.1 (*)
  b60c632... build: Rename MSVC_Net2017 to MSVC_NMake
  b1664fc... build: Split out GNU-specific syntax from atk/atkmm/filelis
  1cd9645... build: Add NMake Makefiles for Visual Studio builds
  98b9aab... build: Remove the Visual Studio 2017 projects

(*) This commit already existed in another branch; no separate mail sent