Log Message:
gtk2: Update to 2.24.33

Overview of Changes from GTK+ 2.24.32 to 2.24.33
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*                                                       *
*   This is the final GTK 2.x release.                  *
*   There will be no more updates to GTK 2.             *
*   All users are encouraged to update to GTK 3 or 4.   *
*                                                       *
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* Make the output of gtk-query-immodules deterministic

* GtkCalendar: Use %OB if supported

* GtkIconTheme: prefer exact matches

* win32:
 - Always process all available messages
 - Ignore autorepeat for modifier keys
 - Ensure monitor enumeration matches up
 - Fix pkg-config file generation with msvc
 - Fix UAC manifest rc file
 - Add Visual Studio 2019 project files

* MacOS:
 - Use NSGraphicsContext after Yosemite
 - Force redraw on Mojave and later when processing updates
 - Fix a use-after-free

* build:
 - Support automake 1.16
 - Fix compiler warnings with newer gcc