* class.c (current_class_ptr, current_class_ref): Clarify

	* class.c (current_class_ptr, current_class_ref): Clarify
	documentation.
	* cvt.c (ocp_convert): Don't expect fold to remove all trivial
	NOP type conversions.
	* decl.c (decls_match): Use comptypes directly; ignore
	qualifiers on the DECL.
	(duplicate_decls): Remove qualifier checks on DECL.
	(grokdeclarator): Make the type built up include top-level
	qualifiers.
	* decl2.c (do_dtors): Fix spelling error.
	* error.c (dump_simple_decl): Don't look at qualifiers on the decl
	when printing type information.
	* init.c (build_new_1): Add documentation.  Deal with the fact
	that type of allocated memory now contains qualifiers.
	* lex.c (is_global): Improve error-recovery.
	* sig.c (build_member_function_pointer): Don't cast away const
	on fields of sigtable_entry_type.
	* tree.c (lvalue_type): Don't look at top-level qualifiers on
	expressions.
	* typeck.c (decay_conversion): Likewise.
	(build_component_ref): Make sure the type of the COMPONENT_REF
	contains top-level qualifiers, as appropriate.  Improve
	error-handling.
	(build_indirect_ref): Simplify.  Don't strip top-level qualifiers.
	(build_array_ref): Likewise.
	(build_unary_op): Improve error-recovery.
	(unary_complex_lvalue): Make taking the address a bound member
	function an error, not a sorry.
	(build_conditional_expr): Look at the type qualifiers, not the
	qualifiers on the expression itself.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22802 138bc75d-0d04-0410-961f-82ee72b054a4