Add unstable jitsi

The original ebuild was written for pentoo.

net-im/jitsi-bin-2.5.ebuild

+# Copyright 1999-2013 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+EAPI=4
+inherit rpm
+
+PV_RAND="5065"
+DESCRIPTION="Secure IM communicator that supports SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo"
+HOMEPAGE="https://jitsi.org/"
+SRC_URI="
+	x86? ( https://download.jitsi.org/jitsi/rpm/jitsi-${PV}-${PV_RAND}.i686.rpm )
+	amd64? ( https://download.jitsi.org/jitsi/rpm/jitsi-${PV}-${PV_RAND}.x86_64.rpm )"
+
+RESTRICT="strip"
+
+LICENSE="LGPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+RDEPEND="|| ( virtual/jre virtual/jdk )"
+DEPEND="${RDEPEND}
+	app-arch/rpm2targz"
+
+QA_PREBUILT="
+	usr/share/jitsi/lib/native/*
+"
+
+S="${WORKDIR}"
+
+src_unpack() {
+	rpm_unpack
+}
+
+src_install() {
+	cp -pPR "${S}/usr" "${D}"/
+}
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