dev-libs/libunistring: Sync with gentoo

It's from gentoo commit 5361be135095750cf1a7c2242003c8c3711fa1a0.

sdk_container/src/third_party/portage-stable/dev-libs/libunistring/Manifest

@@ -1 +1,2 @@
 DIST libunistring-0.9.10.tar.gz 3744814 BLAKE2B 3ddc55b8021c0f4822beb83b807bb21dbbf10bbb866747f64e060df3ab822a4143528855e1ce6a13144630bc8daa14f1fa830db77fb605e57cae21d46de804d6 SHA512 690082732fbbd47ab4ffbd6f21d85afece0f8e2ded24982f949f4ae52bf0a981b75ea9bc14ab289e0954cde07f31a7a4c2bb65615a8eb5b2bfa65720310b6fc9
+DIST libunistring-1.0.tar.gz 4214306 BLAKE2B 177f21d9fb6d81ea6bb2fd05f9ca31cd6cecb5a16be273de8817a8fb6ffac997421ebf108acebcb3392b8df423b7e3e150f24a731e0909e2ba171b4bae2fb53d SHA512 6125e3911d15bea8fea5c0b97864f928eab8c8476f1a24c7349b0552e2d11d9b73c1fa0fcb354917e42407d4e5adea55d0c8012121fa0a53c60faa7b0911aef3

sdk_container/src/third_party/portage-stable/dev-libs/libunistring/files/libunistring-test.patch

@@ -0,0 +1,15 @@
+https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=cca32830b57e91f837c01d15b8732f23ff97fc36
+
+Author: Bruno Haible <bruno@clisp.org>
+
+--- a/tests/glthread/thread.h
++++ b/tests/glthread/thread.h
+@@ -133,8 +133,6 @@ extern int glthread_in_use (void);
+    call to foo(...) in the same function.  To avoid this, we test the
+    address of a function in libpthread that we don't use.  */
+ 
+-#  pragma weak pthread_create
+-
+ #  ifndef pthread_sigmask /* Do not declare rpl_pthread_sigmask weak.  */
+ #   pragma weak pthread_sigmask
+ #  endif

sdk_container/src/third_party/portage-stable/dev-libs/libunistring/libunistring-0.9.10-r1.ebuild

@@ -1,21 +1,22 @@
-# Copyright 1999-2019 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=6
+EAPI=7
 
-inherit eutils multilib-minimal libtool
+inherit multilib-minimal libtool
 
 DESCRIPTION="Library for manipulating Unicode and C strings according to Unicode standard"
 HOMEPAGE="https://www.gnu.org/software/libunistring/"
 SRC_URI="mirror://gnu/${PN}/${P}.tar.gz"
 
-LICENSE="LGPL-3 GPL-3"
+LICENSE="|| ( LGPL-3+ GPL-2+ ) || ( FDL-1.2 GPL-3+ )"
 SLOT="0/2"
-KEYWORDS="alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 ~riscv s390 sh sparc x86 ~x64-cygwin ~amd64-fbsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~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="doc static-libs"
 
 PATCHES=(
 	"${FILESDIR}"/${PN}-nodocs.patch
+	"${FILESDIR}"/${PN}-test.patch
 )
 
 src_prepare() {
@@ -28,17 +29,14 @@ multilib_src_configure() {
 	econf $(use_enable static-libs static)
 }
 
-multilib_src_install() {
-	default
-
-	prune_libtool_files
-}
-
 multilib_src_install_all() {
 	default
 
 	if use doc; then
-		dohtml doc/*.html
+		docinto html
+		dodoc doc/*.html
 		doinfo doc/*.info
 	fi
+
+	find "${ED}" -name '*.la' -delete || die
 }

sdk_container/src/third_party/portage-stable/dev-libs/libunistring/libunistring-1.0.ebuild

@@ -0,0 +1,40 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit multilib-minimal libtool
+
+DESCRIPTION="Library for manipulating Unicode and C strings according to Unicode standard"
+HOMEPAGE="https://www.gnu.org/software/libunistring/"
+SRC_URI="mirror://gnu/${PN}/${P}.tar.gz"
+
+LICENSE="|| ( LGPL-3+ GPL-2+ ) || ( FDL-1.2 GPL-3+ )"
+SLOT="0/2"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~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="doc static-libs"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-nodocs.patch
+)
+
+src_prepare() {
+	default
+	elibtoolize  # for Solaris shared libraries
+}
+
+multilib_src_configure() {
+	ECONF_SOURCE="${S}" econf $(use_enable static-libs static)
+}
+
+multilib_src_install_all() {
+	default
+
+	if use doc ; then
+		docinto html
+		dodoc doc/*.html
+		doinfo doc/*.info
+	fi
+
+	find "${ED}" -name '*.la' -delete || die
+}

sdk_container/src/third_party/portage-stable/dev-libs/libunistring/metadata.xml

@@ -1,11 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+
 <pkgmetadata>
   <maintainer type="project">
     <email>scheme@gentoo.org</email>
     <name>Gentoo Scheme Project</name>
   </maintainer>
-<longdescription lang="en">
+  <longdescription>
     Text files are nowadays usually encoded in Unicode, and may consist of very
     different scripts – from Latin letters to Chinese Hanzi –, with many kinds
     of special characters – accents, right-to-left writing marks, hyphens, Roman