am 01a1f8b0: am b5239ed1: libc: allow usage of time64.h from cpp code

Merge commit '01a1f8b080d9d4e619ce00039f195f6fa3aa2045'

* commit '01a1f8b080d9d4e619ce00039f195f6fa3aa2045':
  libc: allow usage of time64.h from cpp code