* Resurrect architectural defaults for ia64.
* Add architectural defaults for riscv64.
Thanks to Manuel A. Fernandez Montecelo (Closes: #897128)
* Bump to debhelper compat level 11.
* d/rules: remove get-orig-source target.
* Remove Built-Using field.
Since both LAPACK and ATLAS are under BSD-3-clause, there is no reason to
use this field (which is now restricted to license compliance issues).
* Bump S-V to 4.1.4.
* Update Vcs-* fields for move to salsa.
* Install doc under /u/s/d/libatlas-base-dev, per Policy §12.3.