autotools.eclass: Support EAPI 9

Acked-by: Sam James <sam@gentoo.org>
Signed-off-by: Ulrich Müller <ulm@gentoo.org>

eclass/autotools.eclass

@@ -4,7 +4,7 @@
 # @ECLASS: autotools.eclass
 # @MAINTAINER:
 # base-system@gentoo.org
-# @SUPPORTED_EAPIS: 7 8
+# @SUPPORTED_EAPIS: 7 8 9
 # @BLURB: Regenerates auto* build scripts
 # @DESCRIPTION:
 # This eclass is for safely handling autotooled software packages that need to
@@ -27,7 +27,7 @@ if [[ -z ${_AUTOTOOLS_ECLASS} ]] ; then
 _AUTOTOOLS_ECLASS=1
 
 case ${EAPI} in
-	7|8) ;;
+	7|8|9) ;;
 	*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
 esac