Major infrastructure changes, part 2.

* Moved helpers, common and triggers dirs into xbps-src, where
  they belong.
* Renamed the templates dir to srcpkgs, it was so redundant before.
* Make it possible to add subpkgs with no restriction in names, for
  example udev now has a subpkgs called "libgudev". Previously
  subpkgs were named "${sourcepkg}-${pkgname}".
* xbps-src: changed to look for template files in current directory.
  That means that most arguments from the targets have been removed.
* xbps-src: added a reinstall target, to remove + install.
* xbps-src: do not overwrite binpkgs by default, skip them.

And more that I forgot because it's a mega-commit that I've been
working for some days already...

--HG--
extra : convert_revision : 0f466878584d1e6895d2a234f07ea1b2d1e61b3e

xbps-src/triggers/openrc-service

@@ -0,0 +1,79 @@
+#!/bin/sh
+#
+# Registers or unregisters OpenRC services into the specified
+# runlevel.
+#
+# Arguments:	$1 = action	[run/targets]
+#		$2 = target	[post-install/pre-remove]
+#		$3 = pkgname
+#		$4 = version
+#		$5 = update	[yes/no]
+#
+ACTION="$1"
+TARGET="$2"
+PKGNAME="$3"
+VERSION="$4"
+UPDATE="$5"
+
+initdir=etc/init.d
+metadatadir=var/db/xbps/metadata/${PKGNAME}
+
+case "$ACTION" in
+targets)
+	echo "post-install pre-remove"
+	;;
+run)
+	[ ! -x sbin/rc-update ] && exit 0
+	[ ! -x sbin/rc-service ] && exit 0
+	[ -z "$openrc_services" ] && exit 1
+
+	if [ "$TARGET" = "pre-remove" ]; then
+		rcupdate_args="del"
+	elif [ "$TARGET" = "post-install" ]; then
+		rcupdate_args="add"
+	else
+		exit 1
+	fi
+
+	[ ! -f etc/fstab ] && touch etc/fstab
+
+	set -- ${openrc_services}
+	while [ $# -gt 0 ]; do
+		srv_restart=$metadatadir/.$1_srv_restart
+		if [ "$TARGET" = "post-install" ]; then
+			if [ -f $srv_restart ]; then
+				# Restart service if it was running previously.
+				$initdir/$1 start
+				rm -f $srv_restart
+			else
+				# Register service.
+				if sbin/rc-service -e ${1}; then
+					sbin/rc-update add ${1} ${2}
+				fi
+			fi
+		else
+			# While removing always stop the service if running.
+			$initdir/$1 -q status
+			if [ $? -eq 0 ]; then
+				$initdir/$1 stop
+			fi
+			#
+			# While upgrading a package, don't remove the service.
+			#
+			if [ "$UPDATE" = "yes" ]; then
+				touch -f $srv_restart
+			else
+				# Unregister the service.
+				sbin/rc-update del ${1} ${2}
+			fi
+		fi
+		unset srv_restart
+		shift; shift;
+	done
+	;;
+*)
+	exit 1
+	;;
+esac
+
+exit 0