Kerberos support for Windows clients (Active Directory integration)

Fully integrate Kerberos authentication into Windows clients. It's not a nice-to-have, it's a critical capability and Vertica shouldn't claim Kerberos support and Windows support if the truth is that you can have either but not both! Integration of Linux-based Kerberos and Active Directory is straightforward. I can demo login using an AD Kerberos server from Linux, but the Windows drivers don't support GSSAPI or Kerberos, as far as I can tell and based on other information on this site.