[Users] avpops syntax

[Klaus Darilion]

Hi!

IMO avpops syntax is a little bit confusing:

avp_write(value,name):        value       --> name
avp_pushto(destination,name): destination <-- name

it would be more intuitive if source and destination are always in the 
same order.

Further: is there still need for both functions? Maybe we could replace 
them with a single function due to the new AVPOPS syntax:

  avp_copy(source,destination) ???

regards
klaus