typeck.c: Change copyright header to refer to version 3 of the GNU General Public...
* typeck.c: Change copyright header to refer to version 3 of the GNU General
Public License and to point readers at the COPYING3 file and the FSF's license
web page.
* optimize.c, lang-specs.h, init.c, class.c, repo.c, decl.c, config-lang.in,
cp-tree.def, call.c, decl.h, ptree.c, Make-lang.in, method.c, rtti.c,
cp-objcp-common.c, g++spec.c, cp-objcp-common.h, except.c, error.c,
operators.def, cvt.c, tree.c, mangle.c, cp-tree.h, dump.c, search.c,
friend.c, expr.c, cp-gimplify.c, cxx-pretty-print.c, cp-lang.c, typeck2.c,
pt.c, cxx-pretty-print.h, semantics.c, name-lookup.c, lex.c, decl2.c,
name-lookup.h, parser.c: Likewise.