Composite key for uniqueKeyId

[Jon Baer]

Hi,

Im interested to know if composite keys are now possible or if there  
is anything to copyField I can use to get composite keys working for  
my doc ids?

Thanks.

-snip-
support for composite keys ... either with some explicit change to the  
`<uniqueKey>`
declaration or perhaps just copyField with some hidden magic that  
concats the resulting terms
into a single key Term
-snip-

- Jon