Mount /lib/modules at initramfs phase (#263)

This isn't elegant but /etc/rc.d/rc.sysinit requires modules at very early
phase - before any customizable script (just before calling
/etc/sysconfig/modules/*.modules).

kernel-xenlinux.spec

@@ -288,6 +288,7 @@ mkdir -p %buildroot/%vm_install_dir
 /sbin/dracut --nomdadmconf --nolvmconf \
     --kmoddir %buildroot/lib/modules/%kernelrelease \
     --include %_sourcedir/vm-initramfs-pre-udev /pre-udev \
+    --include %_sourcedir/vm-initramfs-pre-pivot /pre-pivot \
     --add-drivers xenblk \
     %buildroot/%vm_install_dir/initramfs %kernelrelease
 

vm-initramfs-pre-pivot/50_mount_modules.sh

@@ -0,0 +1,10 @@
+#
+# This file should be places in pre-pivot directory in dracut's initramfs
+#
+
+#!/bin/sh
+
+echo "Waiting for /dev/xvdd device..."
+while ! [ -e /dev/xvdd ]; do sleep 0.1; done
+
+mount -n -t ext3 -o ro /dev/xvdd $NEWROOT/lib/modules