Log Message:
x11/fltk13: Update to 1.3.8

This release does not contain new "ABI features". The ABI (Application
Binary Interface) is 100% compatible with releases 1.3.5 - 1.3.7.

CHANGES IN FLTK 1.3.8                                 RELEASED: Nov 20 2021

FLTK 1.3.8 is a maintenance release with some fixes and enhancements.

Details:

  Albrecht Schlosser:
    Make "FLTK_CONSOLIDATE_MOTION" user-definable (issue #76)
    Fix compiler warnings (backported from 1.4)
    Add new dialog fl_choice_n() with extended return values (#282)

  ManoloFLTK:
    Account for deprecation of [NSBitmapImageRep initWithFocusedViewRect:]
      in macOS 10.14
    macOS: fix fullscreen window when other windows were created before
    Fix issue #287: "FLTK 1.3.6 doesn't handle fullscreen on macOS"
    Fix issue #288: "FLTK 1.3.6+ doesn't notify window movement on macOS"
    Fix issue #279: "HiDpi issue on macOS with retina display"
    macOS: Allow building with non-Apple compiler that may not support
      blocks