Legal headers

[Guillaume Nodet]

We need to think about updating the file headers
according to the latest Apache policies.

See http://www.apache.org/legal/src-headers.html#headers

I have just done that on XBean manually :(
but i guess some script would be easier.
If i recall, i heard about them somewhere,
maybe  on [EMAIL PROTECTED]

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Cheers,
Guillaume Nodet