Log message:
trader: update to 7.18.

Version 7.18 (3rd August, 2022)
-------------------------------

Minor bug fix: remove the ``<icon>`` line from `trader.appdata.xml.in` so
that the icon is taken from the `trader.desktop` file instead, otherwise
Fedora builds fail with a message from ``appstream-util validate-relax``
that "tag-invalid: stock icon is not valid [trader.svg]".

Version 7.17 (3rd August, 2022)
-------------------------------

Fixed two TOCTOU (time-of-check / time-of-use) bugs that arose between
checking for the traditional data directory and creating a data directory
later.  Also fixed a bug when the ``HOME`` environment variable is empty:
use the current directory instead.

Updated the Brazilian Portuguese, Norwegian Bokmal, Swedish, French,
Esperanto, Serbian, German and English translations (in that order), with
thanks to Rafael Fontenelle, Johnny A. Solbu, Anders Jonsson, Frederic
Marchal, Felipe Castro, Miroslav Nikolih and Roland Illig respectively.

Updated the minimum version of GNU Autoconf required, giving the option
of compiling with C17 or C11 instead of C99.  Updated to the latest
snapshot of the Gnulib GNU Portability Library.

Log message:
*: drop maintainership for packages not related to toolchains and ELF.

Log message:
games: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
games: Remove SHA1 hashes for distfiles

Log message:
games/trader: import trader-7.16.

Star Traders is a simple text-based game of interstellar trading, where
the objective is to create companies, buy and sell shares, borrow and
repay money, in order to become the wealthiest player (the winner).