Import Debian version 2.2.4

CMakeLists.txt

apt-pkg/acquire-item.cc

apt-pkg/indexfile.cc

apt-pkg/policy.cc

apt-private/acqprogress.cc

apt-private/private-json-hooks.cc

debian/changelog

doc/apt-verbatim.ent

doc/json-hooks-protocol.md

doc/po/apt-doc.pot

methods/connect.cc

po/apt-all.pot

test/integration/test-apt-cli-json-hooks

test/integration/test-apt-get-install-deb

test/integration/test-apt-https-transient

test/integration/test-bug-723705-tagfile-truncates-fields

test/integration/test-phased-updates

test/integration/test-uri-encode-filename-field

test/libapt/json_test.cc