app-arch/pigz: Bump to version 2.4

with kind permission from radhermit.

Package-Manager: Portage-2.3.19, Repoman-2.3.6

app-arch/pigz/Manifest

@@ -1 +1,2 @@
 DIST pigz-2.3.4.tar.gz 105412 BLAKE2B 821fac7cd0f113ea81b284c1df5d464c2a2bf8f88742ee432eb6fdc31d097983983f22280a52dda04c3f1735297af690bcebdfd70679560525a5c3731652695e SHA512 c0d5da6c5b2da50841aaf3958d5694edca0356d4bef211175e9f2f17e0c815e80b2e62bb39c7761c8f83fdaa84ca7373e130cdb0fa2c96f91c397556cbf7ba2a
+DIST pigz-2.4.tar.gz 98234 BLAKE2B 763fe3975c6a83f46b94741d4e16b40a4edef20b7677e8d32b99856498f951edebd86634c227b0f212f0aff87fd3626e21348fdb3839a6abfb21a547bed88be6 SHA512 79b2357176f93b9f3e2bc07fee393fc4d79b7bd0041808f8ddfd23eafccde72e60ca95e97595bb624a4f732fe3612bf46d57c44541c36ae62f9aa6336abe16ba

app-arch/pigz/pigz-2.4.ebuild

@@ -0,0 +1,38 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit toolchain-funcs flag-o-matic
+
+DESCRIPTION="A parallel implementation of gzip"
+HOMEPAGE="http://www.zlib.net/pigz/"
+SRC_URI="http://www.zlib.net/pigz/${P}.tar.gz"
+
+LICENSE="ZLIB"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-linux ~ppc-macos ~sparc64-solaris"
+IUSE="static symlink test"
+
+LIB_DEPEND="sys-libs/zlib[static-libs(+)]"
+RDEPEND="!static? ( ${LIB_DEPEND//\[static-libs(+)]} )"
+DEPEND="${RDEPEND}
+	static? ( ${LIB_DEPEND} )
+	test? ( app-arch/ncompress )"
+
+src_compile() {
+	use static && append-ldflags -static
+	emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}"
+}
+
+src_install() {
+	dobin ${PN}
+	dosym ${PN} /usr/bin/un${PN}
+	dodoc README
+	doman ${PN}.1
+
+	if use symlink; then
+		dosym ${PN} /usr/bin/gzip
+		dosym un${PN} /usr/bin/gunzip
+	fi
+}