Renaming the User and Org hierachies

[Andreas Sewe]

Hello,

given that at least the current prefix for the Org hierarchy is
suboptimal, I would like to propose renaming both the User and
Org hierarchy to Prs and Vnd, respectively.

The rationale behind those names is that they are the ones the 
IETF/IANA chose for very much the same purpose: to name two
registration trees (for MIME types, in this case), Prs and Vnd 
denoting the "Personal or Vanity" and "Vendor" tree, 
respectively. See "RFC 2048 - MIME Registration Procedures", 
sections 2.1.2 and 2.1.3, for a detailed description of the two 
trees <ftp://ftp.rfc-editor.org/in-notes/rfc2048.txt>.

Does this look like an improvement over User and Org (or 
Contrib, for that matter)?

Regards,

Andreas Sewe