patch: update to 2.8

steps/patch-2.8/import-gnulib.sh

@@ -0,0 +1,107 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# Regenerate unicode files
+pushd ../gnulib-9829f0a/lib
+gcc -Iunictype -o gen-uni-tables gen-uni-tables.c
+mv ../../*.txt .
+./gen-uni-tables UnicodeData-16.0.0.txt \
+    PropList-16.0.0.txt \
+    DerivedCoreProperties-16.0.0.txt \
+    ArabicShaping-16.0.0.txt \
+    Scripts-16.0.0.txt \
+    Blocks-16.0.0.txt \
+    PropList-3.0.1.txt \
+    EastAsianWidth-16.0.0.txt \
+    LineBreak-16.0.0.txt \
+    WordBreakProperty-16.0.0.txt \
+    GraphemeBreakProperty-16.0.0.txt \
+    CompositionExclusions-16.0.0.txt \
+    SpecialCasing-16.0.0.txt \
+    CaseFolding-16.0.0.txt \
+    16.0.0
+popd
+
+../gnulib-9829f0a/gnulib-tool --import \
+ --local-dir=gl \
+ --lib=libpatch \
+ --source-base=lib \
+ --m4-base=m4 \
+ --doc-base=doc \
+ --tests-base=tests \
+ --aux-dir=build-aux \
+ --no-conditional-dependencies \
+ --no-libtool \
+ --macro-prefix=gl \
+ announce-gen \
+ argmatch \
+ assert-h \
+ attribute \
+ backupfile \
+ basename-lgpl \
+ bool \
+ c-ctype \
+ closeout \
+ diffseq \
+ dup2 \
+ errno-h \
+ exitfail \
+ extensions \
+ faccessat \
+ fchmodat \
+ fchownat \
+ fcntl-h \
+ filename \
+ fseeko \
+ fstatat \
+ ftello \
+ futimens \
+ getopt-gnu \
+ gettime \
+ git-version-gen \
+ gitlog-to-changelog \
+ gnupload \
+ hash \
+ idx \
+ ignore-value \
+ intprops \
+ inttypes-h \
+ largefile \
+ maintainer-makefile \
+ malloc-gnu \
+ manywarnings \
+ memchr \
+ mempcpy \
+ minmax \
+ mkdirat \
+ nullptr \
+ openat \
+ parse-datetime \
+ progname \
+ quotearg \
+ raise \
+ readlinkat \
+ realloc-posix \
+ renameat \
+ setenv \
+ signal-h \
+ ssize_t \
+ stat-time \
+ stdckdint-h \
+ stdlib-h \
+ stpcpy \
+ symlinkat \
+ sys_stat-h \
+ tempname \
+ test-xfail \
+ unistd-h \
+ unlinkat \
+ update-copyright \
+ utimensat \
+ verror \
+ xalloc \
+ xstdopen \
+ year2038-recommended