Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)
• Update standards version to 4.6.1, no changes needed. (out-of-date-standards-version)
• Avoid explicitly specifying -Wl,--as-needed linker flag. (debian-rules-uses-as-needed-linker-flag)

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/gamazons/9ae277d6-b4dc-4ee1-ba96-7d1358c86f7f.

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/32/fa0737e051b0eb5fb6269b9c9153e2346b4d44.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/b2/7e637db9b345ce08d51cc247b9512f9f9fcf0e.debug

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

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

• Build-Ids: b27e637db9b345ce08d51cc247b9512f9f9fcf0e 32fa0737e051b0eb5fb6269b9c9153e2346b4d44

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