More accurate and complete headers.
More accurate and complete headers.

Remove the mention of specific labs (irrelevant for a copyright notice).
Add a mention to represent other contributors and a pointer to CREDITS.

Zimmi48/coq,maximedenes/coq,SkySkimmer/coq,JasonGross/coq,ejgallego/coq,gares/coq,SkySkimmer/coq,ejgallego/coq,SkySkimmer/coq,JasonGross/coq,coq/coq,maximedenes/coq,JasonGross/coq,coq/coq,ppedrot/coq,coq/coq,letouzey/coq-wip,silene/coq,coq/coq,ppedrot/coq,gares/coq,maximedenes/coq,gares/coq,ejgallego/coq,maximedenes/coq,Matafou/coq,letouzey/coq-wip,silene/coq,ppedrot/coq,Zimmi48/coq,maximedenes/coq,letouzey/coq-wip,ppedrot/coq,ppedrot/coq,JasonGross/coq,Matafou/coq,ejgallego/coq,letouzey/coq-wip,gares/coq,SkySkimmer/coq,Zimmi48/coq,letouzey/coq-wip,silene/coq,Matafou/coq,Zimmi48/coq,gares/coq