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

srcpkgs/udev/files/udev.initramfs-bottom

@@ -0,0 +1,24 @@
+#!/bin/sh -e
+# initramfs premount script for udev
+
+PREREQ=""
+
+# Output pre-requisites
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case "$1" in
+    prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+
+# Stop udevd, we'll miss a few events while we run init, but we catch up
+pkill udevd
+
+# Move /dev to the real filesystem
+mount -n -o move /dev ${rootmnt}/dev

srcpkgs/udev/files/udev.initramfs-hook

@@ -0,0 +1,42 @@
+#!/bin/sh -e
+# initramfs hook for udev
+
+MINKVER="2.6.24"
+PREREQ=""
+
+# Output pre-requisites
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case "$1" in
+    prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+
+. /usr/share/initramfs-tools/hook-functions
+
+# Copy across the udev binaries
+copy_exec /sbin/udevd /sbin
+copy_exec /sbin/udevadm /sbin
+
+# Copy udev configuration
+mkdir -p ${DESTDIR}/etc/udev
+cp -p /etc/udev/udev.conf ${DESTDIR}/etc/udev
+
+# Only copy across relevant rules
+mkdir -p ${DESTDIR}/lib/udev/rules.d
+for rules in 50-udev-default.rules 60-persistent-storage.rules \
+	61-persistent-storage-edd.rules 64-device-mapper.rules \
+	64-md-raid.rules 80-drivers.rules 95-udev-late.rules; do
+    cp -p /lib/udev/rules.d/$rules ${DESTDIR}/lib/udev/rules.d
+done
+
+# Copy across helpers the rules need
+mkdir -p ${DESTDIR}/lib/udev
+copy_exec /lib/udev/path_id /lib/udev
+cp -f /lib/udev/firmware.sh ${DESTDIR}/lib/udev

srcpkgs/udev/files/udev.initramfs-premount

@@ -0,0 +1,29 @@
+#!/bin/sh -e
+# initramfs premount script for udev
+
+PREREQ=""
+
+# Output pre-requisites
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case "$1" in
+    prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+
+# It's all over netlink now
+echo "" > /proc/sys/kernel/hotplug
+
+# Start the udev daemon to process events
+/sbin/udevd --daemon --resolve-names=never
+
+# Iterate sysfs and fire off everything; if we include a rule for it then
+# it'll get handled; otherwise it'll get handled later when we do this again
+# in the main boot sequence.
+/sbin/udevadm trigger

srcpkgs/udev/files/udev.rc

@@ -0,0 +1,25 @@
+#!/sbin/runscript
+#
+# OpenRC service for udev(7).
+
+command=/sbin/udevd
+command_args="--daemon"
+name="UDev Daemon"
+
+depend()
+{
+	provide dev
+	need sysfs
+	before checkfs fsck
+	keyword novserver
+}
+
+start()
+{
+	echo > /proc/sys/kernel/hotplug
+
+	ebegin "Starting UDev and waiting for uevents"
+	${command} ${command_args} && \
+		udevadm trigger && udevadm settle
+	eend $?
+}