am 9b87a973: Merge "Remove __signalfd4 from 32-bit ABIs; remove basename_r and dirname_r from 64-bit ABIs"

* commit '9b87a9735aaa041c843b511d5d0240202766c8bf':
  Remove __signalfd4 from 32-bit ABIs; remove basename_r and dirname_r from 64-bit ABIs