Add gzip 1.13

steps/gzip-1.13/import-gnulib.sh

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+../gnulib-5651802/gnulib-tool --import --local-dir=gl \
+ --lib=libgzip \
+ --source-base=lib \
+ --m4-base=m4 \
+ --doc-base=doc \
+ --tests-base=tests \
+ --aux-dir=build-aux \
+ --makefile-name=gnulib.mk \
+ --no-conditional-dependencies \
+ --no-libtool \
+ --macro-prefix=gl \
+ --avoid=getline \
+ --avoid=rpmatch \
+ announce-gen \
+ calloc-gnu \
+ close \
+ dirname-lgpl \
+ fclose \
+ fcntl \
+ fcntl-safer \
+ fdatasync \
+ fdopendir \
+ filename \
+ fprintf-posix \
+ fsync \
+ getopt-gnu \
+ git-version-gen \
+ gitlog-to-changelog \
+ gnu-make \
+ gnu-web-doc-update \
+ gnumakefile \
+ gnupload \
+ ignore-value \
+ intprops \
+ largefile \
+ lib-ignore \
+ lstat \
+ maintainer-makefile \
+ malloc-gnu \
+ manywarnings \
+ openat-safer \
+ printf-posix \
+ readme-release \
+ realloc-gnu \
+ savedir \
+ sigaction \
+ stat-time \
+ strerror \
+ sys_stat \
+ time \
+ unistd-safer \
+ unlinkat \
+ update-copyright \
+ utimens \
+ verify \
+ xalloc \
+ year2038 \
+ yesno