Fix some issues reported by lintian

Fix some issues reported by lintian

• Remove unnecessary get-orig-source-target. (debian-rules-contains-unnecessary-get-orig-source-target)
• Update standards version to 4.6.1, no changes needed. (out-of-date-standards-version)
• Set upstream metadata fields: Bug-Database, Bug-Submit, Repository-Browse. (upstream-metadata-file-is-missing, upstream-metadata-missing-bug-tracking)
• Update standards version to 4.6.2, no changes needed. (out-of-date-standards-version)

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/1c/02cb0f7c2578fa963baaa9b16edfde27b063dd.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/44/5f42b7d079dab0feb6514503e26ab54e36ff71.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/69/978faab266390d67b1bc56a20735e8eef3970f.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/9f/55581b3f8d044dbccc3a9684b4e1a2508d9aa5.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/6e/c432b0b8981f83a809411d1e8d6396780af294.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/78/cee9ac69363c589c0bf2c3338ee050d4fdff78.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/ad/274cf399cd60e599c94d3564aebb6d12f6edac.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/de/51d9eb1873fbdfb73d75f7f1ea93177ff07028.debug

No differences were encountered between the control files of package **libjxr-dev**

No differences were encountered between the control files of package **libjxr-tools**

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

• Build-Ids: 6ec432b0b8981f83a809411d1e8d6396780af294 de51d9eb1873fbdfb73d75f7f1ea93177ff07028 445f42b7d079dab0feb6514503e26ab54e36ff71 9f55581b3f8d044dbccc3a9684b4e1a2508d9aa5

No differences were encountered between the control files of package **libjxr0**

Control files of package libjxr0-dbgsym: lines which differ (wdiff format)

• Build-Ids: 78cee9ac69363c589c0bf2c3338ee050d4fdff78 ad274cf399cd60e599c94d3564aebb6d12f6edac 1c02cb0f7c2578fa963baaa9b16edfde27b063dd 69978faab266390d67b1bc56a20735e8eef3970f

You can also view the diffoscope diff (unfiltered).

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/run/21552e3d-1500-445c-9e34-0cd59cae3ad3.