Replace build-dep on libluajit2-5.1-dev with its equivalent provided by the libluajit without a "2". (Closes: #1072353)

Remove restrictions on architecture, now that ppc64el has been excluded in libluajit2. (Closes: #1056377)

* Remove restrictions on architecture, now that ppc64el has been
  excluded in libluajit2. (Closes: #1056377)
* Control: bump Standards-Version to 4.6.2 (from 4.6.1; no further
  changes).

Control: revert binary package to arch:any, replace build-dep on luajit with luajit2 which should be binary-compatible but does support ppc64el.

Set upstream metadata fields: Bug-Database, Bug-Submit

See merge request !1

Changes-By: lintian-brush
Fixes: lintian: upstream-metadata-file-is-missing
See-also: https://lintian.debian.org/tags/upstream-metadata-file-is-missing.html
Fixes: lintian: upstream-metadata-missing-bug-tracking
See-also: https://lintian.debian.org/tags/upstream-metadata-missing-bug-tracking.html

This reverts commit 85b322a6.

This reverts commit bd21ba29.