$SIG{__DIE__} hook is called from evals.

Closes: #1014730

Implementation is faster using join/split rather than Storable.

Avoid autoremoval due to #1000896.

1.7.20.1 is oldstable.

Remove unnecessary constraints

See merge request !2

* apt-cacher: Drop versioned constraint on libwww-curl-perl in Depends.
* apt-cacher: Drop versioned constraint on libberkeleydb-perl in Recommends.
* Remove 1 maintscript entries from 1 files.

Changes-By: deb-scrub-obsolete

Suggestion from "Aaron M. Ucko" <ucko@debian.org>.

Fix some issues reported by lintian

See merge request !1

Changes-By: lintian-brush
Fixes: lintian: debian-changelog-has-wrong-day-of-week
See-also: https://lintian.debian.org/tags/debian-changelog-has-wrong-day-of-week.html

Changes-By: lintian-brush
Fixes: lintian: trailing-whitespace
See-also: https://lintian.debian.org/tags/trailing-whitespace.html