PR c++/19395
	* decl.c (grokdeclarator): Refactor code so that qualified names
	are never allowed as the declarator in a typedef.

	PR c++/19367
	* name-lookup.c (do_nonmember_using_decl): Avoid overloading
	builtin declarations.

	PR c++/19395
	* g++.dg/parse/error24.C: New test.

	PR c++/19367
	* g++.dg/lookup/builtin1.C: New test.

From-SVN: r94466