tsuite/programs/*.cpp - add standard copyright header
readme_doxygen.txt - improve overview of how to generate documentation
license.txt - copyright year changed from 2006 to 2007
grid.h - copyright year changed from 2006 to 2007
grid_do.cpp - copyright year changed from 2006 to 2007
grid_xspec.cpp - copyright year changed from 2006 to 2007
punch_fits.cpp - copyright year changed from 2006 to 2007
doc_atomic_data.pl - from *.c to *.cpp, also run update for files
doc_atomic_data_refer.txt - rm since do not include generated artifacts in svn
doc_atomic_data_refer_old.txt - rm since do not include generated artifacts in svn