dev-lua/say: add luajit support

Bump to EAPI 6
Add Test phase.

Gentoo-Bug: https://bugs.gentoo.org/628758

dev-lua/say/metadata.xml

@@ -8,6 +8,10 @@
 	<longdescription lang="en">
 		Useful for internationalization.
 	</longdescription>
+	<use>
+		<flag name="luajit">Use <pkg>dev-lang/luajit</pkg> instead of
+		<pkg>dev-lang/lua</pkg></flag>
+	</use>
 	<upstream>
 		<remote-id type="github">Olivine-Labs/say</remote-id>
 	</upstream>

dev-lua/say/say-1.3_p1-r1.ebuild

@@ -0,0 +1,39 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+MY_PV=1.3-1
+
+inherit toolchain-funcs
+
+DESCRIPTION="Lua String Hashing/Indexing Library"
+HOMEPAGE="http://olivinelabs.com/busted/"
+SRC_URI="https://github.com/Olivine-Labs/${PN}/archive/v${MY_PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="luajit test"
+
+RDEPEND="
+	!luajit? ( >=dev-lang/lua-5.1:= )
+	luajit? ( dev-lang/luajit:2 )"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig
+	test? ( dev-lua/busted )"
+
+DOCS=( CONTRIBUTING.md README.md )
+
+S="${WORKDIR}/${PN}-${MY_PV}"
+
+src_test() {
+	busted -o gtest || die
+}
+
+src_install() {
+	local instdir
+	instdir="$($(tc-getPKG_CONFIG) --variable INSTALL_LMOD $(usex luajit 'luajit' 'lua'))"/${PN}
+	insinto "${instdir#${EPREFIX}}"
+	doins src/init.lua
+	einstalldocs
+}