Bug#661871: lb_chroot_dpkg symlinks /bin/true from host system into chroot when diverting flash-kernel

["Cody A.W. Somerville" <cody.somerville@canonical.com>]

Package: live-build

lb_chroot_dpkg symlinks /bin/true from the host system into the chroot 
after diverting /usr/sbin/flash-kernel. This is problematic if the 
(E)ABI between the host system and chroot system are incompatible (eg. 
armel host and armhf chroot)as the binary will not be executable and 
thus most likely cause the build to fail if flash-kernel is called 
(which it will be if flash-kernel is installed since it installs 
initramfs-tools hook, which is probably the case when doing an ARM image 
build).