Fix some issues reported by lintian

Fix some issues reported by lintian

• Wrap long lines in changelog entries: 0.0~git20150402.27.3ed7c74-3. (debian-changelog-line-too-long)
• Bump debhelper from old 9 to 12. (package-uses-old-debhelper-compat-version)
• Set debhelper-compat version in Build-Depends. (uses-debhelper-compat-file)
• Set upstream metadata fields: Bug-Database, Bug-Submit. (upstream-metadata-file-is-missing)

This merge proposal was created automatically by the Janitor bot.

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/golang-github-cloudfoundry-gosigar/16b05c5a-56af-4524-9c22-de7c346541e9.

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 first set of .debs but not in second

-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/examples/df.go
-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/examples/free.go
-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/examples/ps.go
-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/examples/uptime.go
-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/fixtures/memory/main.go
-rw-r--r--  root/root   /usr/share/gocode/src/github.com/cloudfoundry/gosigar/fixtures/stress/main.go

No differences were encountered in the control files

You can also view the diffoscope diff (unfiltered).