building ghostscript with FreeType 2.10.3 and newer

[Werner LEMBERG]

A warning for distribution maintainers: Version 2.10.3 and later may
break the build of ghostscript, due to ghostscript's use of a
withdrawn macro that wasn't intended for external usage:

  https://bugs.ghostscript.com/show_bug.cgi?id=702985
  https://lists.nongnu.org/archive/html/freetype-devel/2020-10/msg00002.html

Ghostscript's fix for that is at

  https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=41ef9a0bc36b

Thanks to Allan Coopersmith for the reminder!


    Werner