Log Message:
racket: Update to 8.10

pkgsrc notes:

- Reset maintainer since ASau retired years ago.
- Move etc/racket/config.rktd from PLIST to CONF_FILES.
- Patch away some upstream mistakes:
  . don't hard-code linking against /usr/pkg/lib/libncurses.a
    https://github.com/racket/racket/issues/4734
  . don't hard-code linking against /usr/lib/i18n/libiconv_std.a
    https://github.com/racket/racket/issues/4736
- Remove most paxctl patches -- upstream does it now (only patches
  remaining obviate need for /usr/sbin to be in PATH by passing the
  full path through PAXCTl environment variable).
- Make paxctl business NetBSD-only.

Too many upstream changes to list since 6.12:

https://download.racket-lang.org/v8.10.html
https://download.racket-lang.org/v8.9.html
https://download.racket-lang.org/v8.8.html
https://download.racket-lang.org/v8.7.html
https://download.racket-lang.org/v8.6.html
https://download.racket-lang.org/v8.5.html
https://download.racket-lang.org/v8.4.html
https://download.racket-lang.org/v8.3.html
https://download.racket-lang.org/v8.1.html
https://download.racket-lang.org/v8.1.html
https://download.racket-lang.org/v8.0.html
https://download.racket-lang.org/v7.9.html
https://download.racket-lang.org/v7.8.html
https://download.racket-lang.org/v7.7.html
https://download.racket-lang.org/v7.6.html
https://download.racket-lang.org/v7.5.html
https://download.racket-lang.org/v7.4.html
https://download.racket-lang.org/v7.3.html
https://download.racket-lang.org/v7.2.html
https://download.racket-lang.org/v7.1.html
https://download.racket-lang.org/v7.0.html