/usr/share/openmpi/mpif77.openmpi-wrapper-data.txt is in openmpi-common 1.6.5-9.1+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/openmpi/mpif77-wrapper-data.txt
/usr/share/openmpi/mpif77-wrapper-data.txt