gdb/

gdb/
	Code cleanup.
	* c-typeprint.c (c_type_print_args): Change parameter show_artificial
	to linkage_name.  Invert its value.  Update the function comment.
	(c_type_print_varspec_suffix): Invert it at the caller.
	* dwarf2read.c (dwarf2_compute_name): Invert it at the caller.