games.eclass: Deprecate due to QA policy violations and no reply

Deprecate games.eclass as the eclass in its current form has been
deprecated by the Council and the games team has not replied neither to
requests to fix it, nor to the question whether they are interested in
maintaining it.

Bug: https://bugs.gentoo.org/show_bug.cgi?id=566498
Bug: https://bugs.gentoo.org/show_bug.cgi?id=574080
Bug: https://bugs.gentoo.org/show_bug.cgi?id=574082

eclass/games.eclass

@@ -19,6 +19,11 @@
 #
 # For a general guide on writing games ebuilds, see:
 # https://wiki.gentoo.org/wiki/Project:Games/Ebuild_howto
+#
+# WARNING: This eclass is DEPRECATED and must not be used by new games
+# ebuilds, bug #574082. When writing game ebuilds, no specific eclass
+# is needed. For more details, see the QA team policies page:
+# https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Policies#Games
 
 
 if [[ -z ${_GAMES_ECLASS} ]]; then
@@ -29,7 +34,7 @@ inherit base multilib toolchain-funcs eutils user
 case ${EAPI:-0} in
  0|1) EXPORT_FUNCTIONS pkg_setup src_compile pkg_preinst pkg_postinst ;;
  2|3|4|5) EXPORT_FUNCTIONS pkg_setup src_configure src_compile pkg_preinst pkg_postinst ;;
- *) die "no support for EAPI=${EAPI} yet" ;;
+ *) die "games.eclass is banned in EAPI=${EAPI}, see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Policies#Games" ;;
 esac
 
 if [[ ${CATEGORY}/${PN} != "games-misc/games-envd" ]] ; then