Searching mbr.bin, not always findable in syslinux_dir.
Fixed comment
Added dependencies for jessie
Changed way to retrieve modules-still not right.
Ubuntu 14.04 recovery works now with the help of an assistant script 99-makedev.sh to create missing block devices like sda. Ubuntu 14.04 uses systemd-udevd, but is still depending on upstart. The 99-makedev.sh script is work-around until a final fix is found.
See issue #446
default.conf file: changed variable BACKUP_PROG_OPTIONS="--anchored" - issue #475
added the line:
ConditionPathExists=/sbin/udevd
in /skel/default/usr/lib/systemd/system/udev.service file to avoud udevd start up on f21beta
rekated to issue #507
introduced the mount_fs function with 13_include_mount_filesystem_code.sh which
is called from 13_include_filesystem_code.sh; it will allow us to overrule the
generic mount_fs function from distro overruling script;
e.g. layout/prepare/SUSE_LINUX/i386/14_include_mount_filesystem_code.sh could redefine
the function for btrfs purposes.

The generic script contains the btrfs mount code for fedora 20/21 (and it has been tested)

Look into issue #233 for more in-depth information
added usr/share/rear/layout/prepare/GNU/Linux/SUSE_LINUX/14_include_mount_filesystem_code.sh script
to override the mount_fs function (therefore we start with number 14 instead of 13 so we are sure it gets read after the default mount_fs() function defined in usr/share/rear/layout/prepare/GNU/Linux/13_include_mount_filesystem_code.sh)

This code is coming from J Meixner (see issue #497) read116 fork from SuSe. We are just moving the code from Johannes back into the main stream of rear, but now we extracted the btrfs mount code away from 13_include_filesystem_code.sh into a specific script for SUSE_LINUX called 14_include_mount_filesystem_code.sh;

The purpose is to get one script in the future that could handle all types of btrfs (which I doubt). We also need to think on a Debian specific script to (but that is for later - see issue #408)

Issues #233, #497 and #408
Merge remote-tracking branch 'upstream/master'