* acinclude.m4: Include ../config/accross.m4.
* aclocal.m4: Regenerated.
* configure.host (HOST_64BIT_TYPE): Remove if it is set to long
or long long.
(HOST_U_64BIT_TYPE): Remove if it is set to unsigned long long.
(host64): Remove if HOST_64BIT_TYPE is set to long.
* configure.in (HOST_64BIT_TYPE): Set according to the size of
long and long long.
(HOST_U_64BIT_TYPE): Likewise.
(host64): Likewise.
* configure: Regenerated.