gzip: add recipe for version 1.8.

* Add recipe for 1.8 and use a mirror redirector for SOURCE_URI.
* Sort cmd:* in PROVIDES and BUILD_PREREQUIRES and add cmd:less to
  the latter since less(1) is required for "make check".
* Add TEST() with "make check". Test results: PASS = TOTAL = 18.
* Drop removal of lib/charset.alias as it has disappeared.

app-arch/gzip/gzip-1.8.recipe

@@ -0,0 +1,68 @@
+SUMMARY="The gzip compression utilities"
+DESCRIPTION="gzip (GNU zip) is a compression utility designed to be a \
+replacement for compress. Its main advantages over compress are much \
+better compression and freedom from patented algorithms. It has been \
+adopted by the GNU project and is now relatively popular on the Internet."
+HOMEPAGE="https://www.gnu.org/software/gzip/"
+COPYRIGHT="1992-1993 Jean-loup Gailly
+	1999-2016 Free Software Foundation, Inc."
+LICENSE="GNU GPL v3"
+REVISION="1"
+SOURCE_URI="http://ftpmirror.gnu.org/gzip/gzip-$portVersion.tar.xz"
+CHECKSUM_SHA256="ff1767ec444f71e5daf8972f6f8bf68cfcca1d2f76c248eb18e8741fc91dbbd3"
+PATCHES="gzip-$portVersion.patchset"
+
+ARCHITECTURES="x86_gcc2 x86 x86_64 arm ppc"
+
+PROVIDES="
+	gzip = $portVersion
+	cmd:gunzip = $portVersion
+	cmd:gzip = $portVersion
+	cmd:gzexe = $portVersion
+	cmd:uncompress = $portVersion
+	cmd:zcat = $portVersion
+	cmd:zcmp = $portVersion
+	cmd:zdiff = $portVersion
+	cmd:zegrep = $portVersion
+	cmd:zfgrep = $portVersion
+	cmd:zforce = $portVersion
+	cmd:zgrep = $portVersion
+	cmd:zless = $portVersion
+	cmd:zmore = $portVersion
+	cmd:znew = $portVersion
+	"
+REQUIRES="
+	haiku
+	"
+
+BUILD_REQUIRES="
+	haiku_devel
+	"
+BUILD_PREREQUIRES="
+	cmd:aclocal
+	cmd:autoconf
+	cmd:automake
+	cmd:awk
+	cmd:gcc
+	cmd:libtoolize
+	cmd:make
+	cmd:less
+	"
+
+BUILD()
+{
+	export CFLAGS="-Wno-error"
+	autoreconf -fi
+	runConfigure ./configure
+	make $jobArgs
+}
+
+INSTALL()
+{
+	make install
+}
+
+TEST()
+{
+	make check
+}