Fix some issues reported by lintian

Fix some issues reported by lintian

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

• 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 (out-of-date-standards-version)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.

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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/duperemove/651b3819-1083-4e61-9aa2-eaddd8c8c1b1.

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/0c/9e38f654999fb5fd68363a1010b63c0efc7266.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/75/f0ee95648b149c902465928a09419fb193ef08.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/84/472dfcd165aa41974e282379f19d39bb12eef0.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/c1/96000ed904d1f07c933b7226439e730175a581.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/0d/6313755de522f64b349b98c95646e32d7c8245.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/32/971df65c45b6a5b2c501515551db2960766c8d.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/85/6d8a7ca9bf06e1ee95c732ce8b4cc8cd000072.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/f1/a750f7b6b59b20be19381438752ca1d84ae6ba.debug

No differences were encountered between the control files of package **duperemove**

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

• Build-Ids: 0d6313755de522f64b349b98c95646e32d7c8245 32971df65c45b6a5b2c501515551db2960766c8d 856d8a7ca9bf06e1ee95c732ce8b4cc8cd000072 f1a750f7b6b59b20be19381438752ca1d84ae6ba 0c9e38f654999fb5fd68363a1010b63c0efc7266 75f0ee95648b149c902465928a09419fb193ef08 84472dfcd165aa41974e282379f19d39bb12eef0 c196000ed904d1f07c933b7226439e730175a581

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