Fix some copyright notices:
- extend some to 2007
- use njn@valgrind.org instead of njn25@cam.ac.uk
- use "tool" instead of "skin"


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6703 a5019735-40e9-0310-863c-91ae7b9d1cf9
15 files changed