Move hooks to sync_post

This also removes overlay egencaching, might be re-added later
or just added to the README as a suggestion.

etc/paludis/hooks/sync_post/01-sync_gentoo_cache.bash

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+source "/etc/paludis/hooks/set_portdir.bash"
+
+if [[ ${TARGET} == gentoo ]] ; then
+	# Number of jobs for egencache, default is number or processors.
+	egencache_jobnum="$(nproc)"
+
+	ebegin "Fetching pre-generated metadata cache for gentoo repository"
+	rsync -aq rsync://rsync.gentoo.org/gentoo-portage/metadata/md5-cache/ "${PORTDIR}"/metadata/md5-cache/
+	eend $?
+
+	ebegin "Updating metadata cache for repository ${TARGET}"
+	egencache --jobs=${egencache_jobnum} --repo=${TARGET} --update --update-use-local-desc
+	eend $?
+fi

etc/paludis/hooks/sync_post/02-sync_gentoo_dtd.bash

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+source "/etc/paludis/hooks/set_portdir.bash"
+
+if [[ ${TARGET} == gentoo ]] ; then
+	DTDDIR=${PORTDIR}/metadata/dtd
+	ebegin "Updating DTDs"
+	if [[ -e ${DTDDIR} ]]; then
+		git -C "${DTDDIR}" pull -q --ff
+	else
+		git clone -q https://anongit.gentoo.org/git/data/dtd.git "${DTDDIR}"
+	fi
+	eend "$?"
+fi

etc/paludis/hooks/sync_post/03-sync_gentoo_glsa.bash

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+source "/etc/paludis/hooks/set_portdir.bash"
+
+if [[ ${TARGET} == gentoo ]] ; then
+	GLSADIR=${PORTDIR}/metadata/glsa
+	ebegin "Updating GLSAs"
+	if [[ -e ${GLSADIR} ]]; then
+		git -C "${GLSADIR}" pull -q --ff
+	else
+		git clone -q https://anongit.gentoo.org/git/data/glsa.git "${GLSADIR}"
+	fi
+	eend "$?"
+fi

etc/paludis/hooks/sync_post/04-sync_gentoo_herds_xml.bash

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+source "/etc/paludis/hooks/set_portdir.bash"
+
+if [[ ${TARGET} == gentoo ]] ; then
+	ebegin "Updating herds.xml"
+	wget -q -O "${PORTDIR}"/metadata/herds.xml https://api.gentoo.org/packages/herds.xml
+	eend $?
+fi

etc/paludis/hooks/sync_post/05-sync_gentoo_news.bash

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+source "/etc/paludis/hooks/set_portdir.bash"
+
+if [[ ${TARGET} == gentoo ]] ; then
+	NEWSDIR="${PORTDIR}"/metadata/news
+	ebegin "Updating news items"
+	if [[ -e ${NEWSDIR} ]]; then
+		git -C "${NEWSDIR}" pull -q --ff
+	else
+		git clone -q https://anongit.gentoo.org/git/data/gentoo-news.git "${NEWSDIR}"
+	fi
+	eend $? "Try to remove ${PORTDIR}/metadata/news"
+fi