Fix some issues reported by lintian

Fix some issues reported by lintian

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

• Remove obsolete fields Contact, Name from debian/upstream/metadata (already present in machine-readable debian/copyright).

• Update standards version to 4.6.1, 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 (out-of-date-standards-version)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.

You can follow up to this merge proposal as you normally would.

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/giflib/a3946cfb-f8ac-4470-9e32-84da2c7e7488.

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/17/808fe0aabef6b10a0eef439c2acb8c8091cf17.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/21/5b66e46f8dd783279da4551d8168b2a89434a7.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/4a/e92e8dc99378c9f1b4cca9791edfa84a7fe873.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/c2/0b4378cb693cd47f1b4d4245eb8404d2cd67a0.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/da/7b88dd0476bca953e0443f965f1a8e9676aea8.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/3b/5a398d2cf077d380c14442d68fd39b42d5ea46.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/71/5fbde74bbca65b0445729d72d9825d75b9fadb.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/81/e97f242a6bf87130864471eeae876c3dd0ee7f.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/94/b819ed175fb427f1ffc204eee7ea2dd909af04.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/e9/a128b456ac3a9eb76a3553449741e7b8c57f59.debug

Control files of package giflib-tools: lines which differ (wdiff format)

• Homepage: [-http​://giflib.sourceforge.net/-] {+https​://giflib.sourceforge.net/+}

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

• Build-Ids: 3b5a398d2cf077d380c14442d68fd39b42d5ea46 715fbde74bbca65b0445729d72d9825d75b9fadb 81e97f242a6bf87130864471eeae876c3dd0ee7f 94b819ed175fb427f1ffc204eee7ea2dd909af04 e9a128b456ac3a9eb76a3553449741e7b8c57f59 17808fe0aabef6b10a0eef439c2acb8c8091cf17 215b66e46f8dd783279da4551d8168b2a89434a7 4ae92e8dc99378c9f1b4cca9791edfa84a7fe873 c20b4378cb693cd47f1b4d4245eb8404d2cd67a0 da7b88dd0476bca953e0443f965f1a8e9676aea8 eebbef121c10e3e1637c8e2fd335763be5de03dc

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

• Homepage: [-http​://giflib.sourceforge.net/-] {+https​://giflib.sourceforge.net/+}

Control files of package libgif7: lines which differ (wdiff format)

• Homepage: [-http​://giflib.sourceforge.net/-] {+https​://giflib.sourceforge.net/+}

No differences were encountered between the control files of package **libgif7-dbgsym**

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