- Don't set the pmbr bootable flag on Macs, whether booted via EFI or not (mjg)
    - Don't set GPT HFS+ partitions as bootable (mjg)
    - Mark HFS+ as fsckable (mjg)
    - fix setattr in set_cmdline_bool (pschindl)
    - Add _mounttype to HFSPlus (mjg)
    - Add support for UEFI Mac installs (mjg)
    - Add support for HFS+ partitions (mjg)