Documentation / technical / api-xdiff-interface.txton commit t5000, t5003: do not use test_cmp to compare binary files (b93e6e3)
   1xdiff interface API
   2===================
   3
   4Talk about our calling convention to xdiff library, including
   5xdiff_emit_consume_fn.
   6
   7(Dscho, JC)