[gtkmm] (21 commits) Non-fast-forward update to branch use-dllexport-3-24-meson

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

The branch 'use-dllexport-3-24-meson' 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:

  deebd5c... Add support for building gtkmm with Meson
  f1aacdd... NMake Makefiles: Use /utf-8 if available
  56aa36e... NMake Makefiles: Fix build rules
  15a1abe... NMake Makefiles: Fix previous commit on /utf-8
  35ec6a3... gdk/gdkmmconfig.h.in: Add GDKMM_API
  064c4e1... gtk/gtkmmconfig.h.in: Re-organize GTKMM_API definitions
  dbe4c09... gdk/src/*.hg: Mark classes and functions with GDKMM_API
  12fbf0a... gdk/gdkmm/*.h: Mark functions with GDKMM_API
  daf4d25... tools/m4/class_gtkobject.m4: Allow applying decorations
  33d1deb... gtk/src/*.hg: Mark classes and functions with GTKMM_API
  5e02858... gtk/gtkmm/*.h: Mark functions with GTKMM_API
  cde8f61... NMake Makefiles: Export symbols without gendef if possible
  24dcc64... NMake Makefiles: Ignore warning C4273
  e5353ad... Meson: Clean-up and fix dependency search
  2a14ffe... [gdk|gtk]mmconfig.h.meson: Define [GDK|GTK]MM_API appropria
  6581af8... Meson: Ignore more warnings on Visual Studio
  20b7510... Meson: Fix linking demos and tests on Visual Studio
  6e36f73... Meson: Use '-utf-8' for the the MSVC C compiler
  0fc5e78... NMake Makefiles: Support building from Meson-generated tarb
  3d3c69b... Meson: Fix building when gendef.exe is used

Commits added to the branch:

  31f8b8a... NMake Makefiles: Use /utf-8 if available (*)
  6259e6b... NMake Makefiles: Fix build rules (*)
  b7f10c3... NMake Makefiles: Fix previous commit on /utf-8 (*)
  735c661... gdk/gdkmmconfig.h.in: Add GDKMM_API (*)
  a4026ce... gtk/gtkmmconfig.h.in: Re-organize GTKMM_API definitions (*)
  6a18b21... gdk/src/*.hg: Mark classes and functions with GDKMM_API (*)
  2acdb83... gdk/gdkmm/*.h: Mark functions with GDKMM_API (*)
  d0a9ad2... tools/m4/class_gtkobject.m4: Allow applying decorations (*)
  c123cf9... gtk/src/*.hg: Mark classes and functions with GTKMM_API (*)
  7cbbca9... gtk/gtkmm/*.h: Mark functions with GTKMM_API (*)
  6feac83... NMake Makefiles: Export symbols without gendef if possible (*)
  703c980... NMake Makefiles: Ignore warning C4273 (*)
  3d0068b... Merge branch 'use-dllexport-3-24' into 'gtkmm-3-24' (*)
  19df98d... Add support for building gtkmm with Meson
  92d3e8c... Meson: Clean-up and fix dependency search
  716bd05... [gdk|gtk]mmconfig.h.meson: Define [GDK|GTK]MM_API appropria
  72ed71d... Meson: Ignore more warnings on Visual Studio
  0de82e0... Meson: Fix linking demos and tests on Visual Studio
  87a9a03... Meson: Use '-utf-8' for the the MSVC C compiler
  472e5b1... NMake Makefiles: Support building from Meson-generated tarb
  9775aba... Meson: Fix building when gendef.exe is used

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