Fix some issues reported by lintian

Fix some issues reported by lintian

• Use secure URI in Homepage field. (homepage-field-uses-insecure-uri)

• Set upstream metadata fields: Bug-Database, Bug-Submit (from ./configure), Repository, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking, upstream-metadata-missing-repository)

• Drop unnecessary dependency on dh-autoreconf.

• Update standards version to 4.5.1, no changes needed. (out-of-date-standards-version)

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/lintian-fixes.

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The bot will automatically update the merge proposal to resolve merge conflicts or close the merge proposal when all changes are applied through other means (e.g. cherry-picks). Updates may take several hours to propagate.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/jansson/a1f42cf6-e2a3-46a7-98b8-943463cd9d56.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/e4/fb3811d6eda6c8147568a4c06c182b78ba1d18.debug
-rw-r--r--  root/root   /usr/share/doc-base/libjansson-doc.jansson
-rw-r--r--  root/root   /usr/share/doc/libjansson-dev/html/_static/forkme_right_darkblue_121621.png

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/39/992d77fcaddf7c681c609609f182de739d3b72.debug
-rw-r--r--  root/root   /usr/share/doc-base/jansson

Control files of package libjansson-dev: lines which differ (wdiff format)

• Homepage: [-http​://www.digip.org/jansson/-] {+https​://www.digip.org/jansson/+}

Control files of package libjansson-doc: lines which differ (wdiff format)

• Homepage: [-http​://www.digip.org/jansson/-] {+https​://www.digip.org/jansson/+}

Control files of package libjansson4: lines which differ (wdiff format)

• Homepage: [-http​://www.digip.org/jansson/-] {+https​://www.digip.org/jansson/+}

Control files of package libjansson4-dbgsym: lines which differ (wdiff format)

• Build-Ids: 39992d77fcaddf7c681c609609f182de739d3b72 e4fb3811d6eda6c8147568a4c06c182b78ba1d18

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