Add dual-license information.
-rwxr-xr-x 47404 Doxyfile
-rwxr-xr-x 47415 Doxyfile_cxx
-rwxr-xr-x 17992 LICENSE.GPL
-rwxr-xr-x 1575 README
-rwxr-xr-x 758 arch_config.h
-rwxr-xr-x 7468 compiler.h
-rwxr-xr-x 1523 config_kern.h
-rwxr-xr-x 5142 cpu.h
drwxr-xr-x - drv
drwxr-xr-x - kern
drwxr-xr-x - mware
drwxr-xr-x - os
-rwxr-xr-x 996 verstag.h