* symtab.h (lookup_type_symbol): Declare.

	* symtab.h (lookup_type_symbol): Declare.
	* symtab.c (lookup_symbol_in_language_full): Rename from
	lookup_symbol_in_language.  Add 'for_type' argument.
	(lookup_symbol_in_language): New function.
	(lookup_type_symbol): Likewise.
	(lookup_symbol_aux): Add 'for_type' argument.
	(match_symbol_aux): New function.
	(lookup_symbol_aux_symtabs): Use expand_one_symtab_matching.
	(match_transparent_type): New function.
	(basic_lookup_transparent_type): Use expand_one_symtab_matching.
	* symfile.h (struct quick_symbol_functions)
	<pre_expand_symtabs_matching>: Remove.
	<expand_one_symtab_matching>: New field.
	* psymtab.c (expand_one_symtab_matching_psymtabs): New function.
	(pre_expand_symtabs_matching_psymtabs): Remove.
	(psym_functions): Update.
	* gdbtypes.c (lookup_typename): Use lookup_type_symbol.
	* dwarf2read.c (dw2_lookup_symbol): Update comment.
	(dw2_pre_expand_symtabs_matching): Remove.
	(dw2_expand_one_symtab_matching): New function.
	(dwarf2_gdb_index_functions): Update.