[openjdk-11] Fix lintian warnings

Changelog:

  * d/changelog: remove trailing empty line.
  * d/copyright-generator/strip-common-licenses.sh: add GPLv3 to the
    list of common licenses.
  * d/JB-*.overrides.in, d/s/lintian-overrides: update lintian overrides.
  * d/p/jdk-8334895-proposed.patch: fix typo in the patch description.
  * d/copyright: regenerate copyright.

Testing:

• lintian:

  P: openjdk-11-dbg: renamed-tag library-in-debug-or-profile-should-not-be-stripped => stripped-library [usr/share/lintian/overrides/openjdk-11-dbg:2]
  P: openjdk-11-jre-headless: renamed-tag debug-package-should-be-named-dbg => debug-suffix-not-dbg [usr/share/lintian/overrides/openjdk-11-jre-headless:8]
  P: openjdk-11 source: source-contains-autogenerated-visual-c++-file [src/jdk.accessibility/windows/native/jaccessinspector/jaccessinspectorWindow.rc]

  Keeping renamed-tag warning for backports.