Maikel van den Hurk authored Dec 10, 2018 and Brad King committed Dec 10, 2018

Code for this was prototyped when ELF detection was added long ago but
left commented out.  Use either MH_MAGIC or MH_CIGAM for the 32-bit
variant and use either or MH_MAGIC_64 or MH_CIGAM_64 for the 64-bit
variant.