/usr/src/linux-headers-3.13.0-48-lowlatency/scripts/kconfig/kxgettext.c is in linux-headers-3.13.0-48-lowlatency 3.13.0-48.80.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/src/linux-headers-3.13.0-48-lowlatency/scripts/kconfig/../../../linux-headers-3.13.0-48/scripts/kconfig/kxgettext.c