CLSA-2022-1652706322 Fix CVE(s): CVE-2022-1271

SECURITY UPDATE: arbitrary file override with crafted file names - debian/patches/CVE-2022-1271-1.patch: avoid exploit via multi-newline file names in zgrep.in. - debian/patches/CVE-2022-1271-2.patch: add test in tests/Makefile.am, tests/zgrep-abuse. - debian/patches/CVE-2022-1271-3.patch: port t...