* util/grub-mkconfig.in: Merge `GRUB_DISABLE_LINUX_RECOVERY' and `GRUB_DISABLE_NETBSD_RECOVERY' into a single `GRUB_DISABLE_RECOVERY' variable. All references updated. * util/grub.d/10_kfreebsd.in: Support recovery boot entries.
to avoid accidents when debugging with 'sh -x'. * util/grub-mkrescue.in: Likewise. * util/grub.d/00_header.in: Likewise. * util/grub.d/10_hurd.in: Likewise. * util/grub.d/10_kfreebsd.in: Likewise. * util/grub.d/10_linux.in: Likewise. * util/grub.d/10_netbsd.in: Likewise. * util/grub.d/10_windows.in: Likewise. * util/grub.d/20_linux_xen.in: Likewise. * util/grub.d/30_os-prober.in: Likewise. * util/powerpc/ieee1275/grub-mkrescue.in: Likewise.