- efi: fix condition for use/efi/dtb
- mixin.mk: exclude gnome3-regular metapackage from regular-gnome3 target
- syslinux: try SYSLINUX_UI to none
- initrd-bootchain: use method disk for local boot
- net-ssh: Use two-pass method to install an authorized key for root (thanks
  manowar@)
- net: Allow to configure hostname via TARGET_HOSTNAME (thanks manowar@)