Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)

• debian/rules: Use dh_prep rather than "dh_clean -k". (dh-clean-k-is-deprecated)

• Bump debhelper dependency to >= 7, since that's what is used in debian/compat. (no-versioned-debhelper-prerequisite)

• Bump debhelper from deprecated 7 to 13. (package-uses-deprecated-debhelper-compat-version)

• Set debhelper-compat version in Build-Depends. (uses-debhelper-compat-file)

• Remove field Section on binary package glbsp that duplicates source. (installable-field-mirrors-source)

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/glbsp/b279bb09-0f66-4888-90b9-5d5a947758b6.

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/8c/ec851d40730ed2be638e422ae0f51e70efd21e.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/d1/85af3de999bb9903643d75e81c9eb3584974df.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/87/470d24aaa2093f0ab76e29bb06ac9eb750071c.debug
-rw-r--r--  root/root   /usr/lib/debug/.build-id/af/29dda23ddd5ad9baae5d7eb5f03e96d912b54d.debug

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

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

• Build-Ids: 87470d24aaa2093f0ab76e29bb06ac9eb750071c 8cec851d40730ed2be638e422ae0f51e70efd21e

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

No differences were encountered between the control files of package **libglbsp3**

Control files of package libglbsp3-dbgsym: lines which differ (wdiff format)

• Build-Ids: af29dda23ddd5ad9baae5d7eb5f03e96d912b54d d185af3de999bb9903643d75e81c9eb3584974df

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