The binutils update in r218822 caused the MIPS n64 dynamic binaries to
fail because the ".interp" section is not in the initial sections.
This happens because elf64bmip-defs.sh overrides INITIAL_READONLY_SECTIONS
to add ".MIPS.options" sections instead of the ".reginfo" section used
by n32.
This used to work fine, but after r218822, INITIAL_READONLY_SECTIONS also
contains the .interp section, so the override has to be done differently.
Reported by : aduane at juniper
Obtained from: gonzo (Initial version)
d38ea3bc9e