[gtk] (19 commits) Non-fast-forward update to branch master.msvc

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

The branch 'master.msvc' 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:

  74f00a9... tests/testdnd2.c: Don't include unistd.h unconditionally
  34418d7... demos/widget-factory/widget-factory.c: Include stdlib.h

Commits added to the branch:

  f15a34c... gdk: Handle small final sigma in gdk_keyval_convert_case (*)
  4071e1e... build: require sassc and drop generated .css files (*)
  f140b15... Merge branch 'meson-sassc-subproject' into 'master' (*)
  9f55377... Updated Spanish translation (*)
  0c5ba00... Update Karbi translation (*)
  6104c12... Build fix for GtkCssValues (*)
  09612a1... filechooser: Remove debug spew (*)
  7479564... modelbutton: Update a11y states (*)
  7027fc9... Make it easy to recognize initial style values (*)
  7fbb37a... background: Don't render initial backgrounds (*)
  5faf977... border: Don't render initial borders (*)
  27223f7... Merge branch 'initial-style' into 'master' (*)
  f84fdfc... Merge branch 'sigma' into 'master' (*)
  621120d... css: Fix an oversight in style change computation (*)
  66af531... display-x11: don't mention gdk_monitor_is_primary in the do (*)
  e7f2833... Merge branch 'wip/muktupavels/update-documentation' into 'm (*)
  f291518... tests/testdnd2.c: Don't include unistd.h unconditionally
  69ed4c9... demos/widget-factory/widget-factory.c: Include stdlib.h
  7a1c031... meson/MSVC builds: Use -utf-8 where available

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