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, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking)

This merge proposal was created by the Janitor bot, and it will automatically rebase or close this proposal as appropriate when the target branch changes. Any comments you leave here will be read by the Janitor's maintainers.

Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/glibmm2.4/ceb4eb1d-7271-4e9a-a7d8-1cc35535876c.

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/c4/6ba887263086a338940f95c9fbf85fbb0f8b13.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/dd/4c0c7af44c25dab8f188b868ffcf067dd06201.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/f9/bfd3f0801cde12b9b4b23e21e88abfdf66dab0.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/5f/4c602268fae936db8764d6373f9a8f2b73d372.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/9b/92dcfc5b6db6828f333d7faeff1e57eeb443fc.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/b8/6e41933dd6b35bab6f23ed8503cb98ad46d268.debug

Control files of package libglibmm-2.4-1v5: lines which differ (wdiff format)

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

Control files of package libglibmm-2.4-1v5-dbgsym: lines which differ (wdiff format)

• Build-Ids: 5f4c602268fae936db8764d6373f9a8f2b73d372 9b92dcfc5b6db6828f333d7faeff1e57eeb443fc b86e41933dd6b35bab6f23ed8503cb98ad46d268 c46ba887263086a338940f95c9fbf85fbb0f8b13 dd4c0c7af44c25dab8f188b868ffcf067dd06201 f9bfd3f0801cde12b9b4b23e21e88abfdf66dab0

Control files of package libglibmm-2.4-dev: lines which differ (wdiff format)

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

Control files of package libglibmm-2.4-doc: lines which differ (wdiff format)

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

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