* Merge from Debian (LP: #1020965); remaining changes: - Fix FTBFS on powerpc due to duplicate defnition of __lshrdi3. - Only run update-grub if /boot/grub/grub.cfg exists, fixing installation in chroots. - Run aclocal during build; build-dep on automake1.9. - Add and install kdump init script and initramfs snippet; depend on initramfs-tools and call the update-initramfs trigger. Also call update-grub after update-initramfs trigger. - Default to not kexecing a kernel on boot in the automatically generated conffile. - Only install the kdump initramfs script and depend on makedumpfile on architectures that makedumpfile supports.