dev-build/autoconf-wrapper: Sync with Gentoo

It's from Gentoo commit 01ac1089e8a051a0ee8e0cb5c644929162291c31.

Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>

sdk_container/src/third_party/portage-stable/dev-build/autoconf-wrapper/Manifest

@@ -1 +1,2 @@
 DIST autotools-wrappers-at-20231224.tar.gz 3645 BLAKE2B fbf414240fe3a4b5d2c24ea649cc347df46bf7f0297bc0d27f98265f57753a596929277403496d76d6249f878bffa8be3e77b62ce9138df6920dd9a5216b300a SHA512 a3cc51e1eb1d055a8161b86bc3497a9bea3cb972d8d22b2f9fc712ca5ecb7809e84083a5754705911f2d037cbff83747476e96b412bfe11183273764de0d5331
+DIST autotools-wrappers-at-20260320.tar.gz 3644 BLAKE2B 6f28eab0182ed4029de7bdbe4ec91b228a3a9015acb25fd33626f50103b0a6f9e70bd6a187a60a2cf85cc620276594f74a0c1457aefcf5123cf48cda229b1ca6 SHA512 500893c108c6947fab30c47b82a0147c6702abf49b0b5c4a3c4d9451e1e430e44c4f137ec18ac18024dde5d261f30392f86f89526bd1adf806e492951587d788

sdk_container/src/third_party/portage-stable/dev-build/autoconf-wrapper/autoconf-wrapper-20260320.ebuild

@@ -0,0 +1,47 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_P="autotools-wrappers-at-${PV}"
+
+# Remember to modify LAST_KNOWN_VER 'upstream' on new autoconf releases!
+
+DESCRIPTION="Wrapper for autoconf to manage multiple autoconf versions"
+HOMEPAGE="https://gitweb.gentoo.org/proj/autotools-wrappers.git"
+
+if [[ ${PV} == *9999 ]] ; then
+	EGIT_REPO_URI="
+		https://anongit.gentoo.org/git/proj/autotools-wrappers.git
+		https://github.com/gentoo/autotools-wrappers
+	"
+	inherit git-r3
+else
+	SRC_URI="https://gitweb.gentoo.org/proj/autotools-wrappers.git/snapshot/${MY_P}.tar.gz"
+	S="${WORKDIR}/${MY_P}"
+
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~arm64-macos ~x64-macos ~x64-solaris"
+fi
+
+LICENSE="GPL-2"
+SLOT="0"
+
+src_prepare() {
+	default
+
+	# usr/bin/aclocal: bad substitution -> /bin/sh != POSIX shell
+	if use prefix ; then
+		sed -i -e '1c\#!'"${EPREFIX}"'/bin/sh' ac-wrapper.sh || die
+	fi
+}
+
+src_install() {
+	exeinto /usr/$(get_libdir)/misc
+	doexe ac-wrapper.sh
+
+	dodir /usr/bin
+	local x=
+	for x in auto{conf,header,m4te,reconf,scan,update} ifnames ; do
+		dosym -r /usr/$(get_libdir)/misc/ac-wrapper.sh /usr/bin/${x}
+	done
+}