Start of v6-19 development cycle for future production release v6.20.

Tag release candidate v6.18/00-rc1 (aka development release 6.17/02).

Tag development release 6.17/02 (aka release candidate v6.18/00-rc1).

Tag marking tip-of-the-branch of v6-04-00-patches.

Tag marking tip-of-the-branch of v6-02-00-patches.

Tag marking tip-of-the-branch of v6-00-00-patches.

Tag marking tip-of-the-branch of v5-32-00-patches.

Tag marking tip-of-the-branch of v5-30-00-patches.

Tag marking tip-of-the-branch of v5-28-00-patches.

Tag marking tip-of-the-branch of v5-27-06-patches.