[pangomm] (9 commits) Non-fast-forward update to branch master.msvc-meson.improvements

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

The branch 'master.msvc-meson.improvements' 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:

  c369646... meson.build: Look for libsigc++ with pkg-config on MSVC too
  896a967... Meson: Allow maintainer builds on Visual Studio too
  80df276... meson: Build generate_extra_defs with Visual Studio too

Commits added to the branch:

  206e3c8... NMake Makefiles: Add rules to generate pre-configured items (*)
  473e759... NMake Makefiles: Allow builds from a GIT checkout (*)
  8d58ba7... NMake Makefiles: Separate outdir and intdir by toolset vers (*)
  f3492ee... NMake Makefiles: Support Meson-built libsigc++ (*)
  531d802... pango/src/color.hg: Fix call to _CLASS_BOXEDTYPE_STATIC
  7d4d9a7... Meson: allow maintainer builds on Visual Studio too
  f3d35fe... meson.build: Look for glibmm with pkg-config on MSVC too
  481aaaf... meson: Build generate_extra_defs with Visual Studio too
  2edccb2... meson: Ignore warning C4251 and C4275 on MSVC builds

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