Merge doc/* from mailman-2.1.16.tgz
Add mailman-2.1-no-description-in-header.patch

[PATCH] CookHeaders: Don't include the list description in headers

Mailman includes mlist.description in Reply-To and List-Id
headers in Utils.GetCharSet(mlist.preferred_language) encoding.
This encoding can be different from headers in post messages.

This situation affects buggy MUAs (e.g., Becky! Internet Mail)
that generate broken encoded headers.
Add mailman-2.1-obsolete-admin-address.patch

Remove obsolete -admin address to be used for listname
Add mailman-2.1.17-postfix-virtual-case.patch

[PATCH] Fixed POSTFIX_STYLE_VIRTUAL_DOMAINS to be case-insensitiive.
README.md: Update for new patches and add memo