Versions bump

        busybox 1.20.0 -> 1.21.1
        cryptsetup 1.4.3 -> 1.6.3
        dropbear 2012.55 -> 2013.62
        libgcrypt 1.5.0 -> 1.6.0
        libgpg-error 1.10 -> 1.12
        lvm2 2.02.97 -> 2.02.103
        mdadm 3.2.5 -> 3.2.6
        zlib 1.2.7 -> 1.2.8