- Add 'libboost-all-dev' and 'libreadline-gplv2-dev' as they were was found
  to be a compulsory build dependency for columnstore plugin.
- Add 'expect' as run-time dependencey for columnstore plugin as scripts
  use it:
    usr/bin/mcs_module_installer.sh: #!/usr/bin/expect
    usr/bin/remote_command.sh: #!/usr/bin/expect
    usr/bin/remote_command_verify.sh: #!/usr/bin/expect
    usr/bin/remote_scp_get.sh: #!/usr/bin/expect
    usr/bin/remote_scp_put.sh: #!/usr/bin/expect
    usr/bin/rsync.sh: #!/usr/bin/expect
- Properly define depends on Python. No Python 2 support needs to be
  considered, Python 3 has been around long enough. Fixes Lintian errors
    E: mariadb-plugin-columnstore: python-script-but-no-python-dep
    usr/bin/mcs-loadbrm.py #!python
    E: mariadb-plugin-columnstore: python-script-but-no-python-dep
    usr/bin/mcs-start-storagemanager.py #!python
- Partially revert undocumented and thus unjustified changes in commits
  d69a79da63287089efdc5f90a11ecd66ce55b471 and
  c0565666cfe6528b76bc53ce50d3690d13c92cf6.
- Trigger ldconfig, otherwise Lintian complains:
    E: mariadb-plugin-columnstore: package-must-activate-ldconfig-trigger
    usr/lib/x86_64-linux-gnu/libwriteengineredistribute.so
- Update postinst to be compatible with new server binary mariadbd name.
- Properly detect systemd or fallback to sysv init in postrm script.
- Only attempt to build ColumnStore on amd64 and i386. Test builds on
  Launchpad.net showed the CMake plugin configure step will prevent even
  attempts to build on other platforms.
- Clean up and unify cmake build command in debian/rules.
- Explicitly list files not installed.
- Run 'wrap-and-sort -a -v'.
- Truncate build logs on Salsa-CI to keep under 4 MB. This is now needed
  as the ColumnStore build is so verbose.
  See https://jira.mariadb.org/browse/MCOL-4111.
- Update Travis-CI dependencies to match new debian/control.