sys-devel/patch: Sync with Gentoo

It's from Gentoo commit 4f3a2f4276d716c11d39f2851d781225b777f053.

sdk_container/src/third_party/portage-stable/sys-devel/patch/patch-2.7.6-r5.ebuild

@@ -0,0 +1,59 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/patch.asc
+inherit flag-o-matic verify-sig
+
+DESCRIPTION="Utility to apply diffs to files"
+HOMEPAGE="https://www.gnu.org/software/patch/patch.html"
+SRC_URI="mirror://gnu/patch/${P}.tar.xz"
+SRC_URI+=" verify-sig? ( mirror://gnu/patch/${P}.tar.xz.sig )"
+
+LICENSE="GPL-3+"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="static test xattr"
+RESTRICT="!test? ( test )"
+
+RDEPEND="xattr? ( sys-apps/attr )"
+DEPEND="${RDEPEND}"
+BDEPEND="test? ( sys-apps/ed )
+	verify-sig? ( sec-keys/openpgp-keys-patch )"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-fix-test-suite.patch
+	"${FILESDIR}"/${PN}-2.7.6-fix-error-handling-with-git-style-patches.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2018-6951.patch
+	"${FILESDIR}"/${PN}-2.7.6-allow-input-files-to-be-missing-for-ed-style-patches.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2018-1000156.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2018-6952.patch
+	"${FILESDIR}"/${PN}-2.7.6-Do-not-crash-when-RLIMIT_NOFILE-is-set-to-RLIM_INFINITY.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2018-1000156-fix1.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2018-1000156-fix2.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2019-13636.patch
+	"${FILESDIR}"/${PN}-2.7.6-CVE-2019-13638.patch
+	"${FILESDIR}"/${PN}-2.7.6-Avoid-invalid-memory-access-in-context-format-diffs.patch
+)
+
+src_configure() {
+	use static && append-ldflags -static
+
+	local myeconfargs=(
+		$(use_enable xattr)
+		# rename to gpatch for better BSD compatibility
+		--program-prefix=g
+	)
+	# Do not let $ED mess up the search for `ed` 470210.
+	ac_cv_path_ED=$(type -P ed) \
+		econf "${myeconfargs[@]}"
+}
+
+src_install() {
+	default
+
+	# symlink to the standard name
+	dosym gpatch /usr/bin/patch
+	dosym gpatch.1 /usr/share/man/man1/patch.1
+}