Log Message:
freeglut: Update to 3.2.2

                                 freeglut 3.2.2

Changes

     * Fix netbsd/aarch64 build by including sys/joystick.h instead of
       machine/joystick.h.
     * Fix build with gcc >= 10 which made -fno-common the default by no
       longer relying on COMMON symbols for globals.
     * Fix android build (default to FREEGLUT_GLES, and check for debug
       flags).
     * Add flat shading option to the shapes demo.
     * Fix crash when calling primitive drawing functions without creating a
       window first.
     * Dropped really old and unmaintained doc directory from the source
       tree.