ARI fixes: Avoid sprintf function use rule.

	ARI fixes: Avoid sprintf function use rule.
	* charset.c (convert_between_encodings): Use xsnprintf.
	* cli-out.c (cli_field_int): Likewise.
	* cp-namespace.c (cp_lookup_nested_symbol): Likewise.
	* expprint.c (op_name_standard): Likewise.
	* frv-tdep.c (set_variant_num_gprs): Likewise.
	(set_variant_num_fprs): Likewise.
	* m68hc11-tdep.c (m68hc11_initialize_register_info): Likewise.
	* nto-tdep.c (nto_find_and_open_solib): Likewise.
	(nto_init_solib_absolute_prefix): Likewise.
	* source.c (init_source_path): Likewise.
	(print_source_lines_base): Likewise.
	* valprint.c (print_wchar): Likewise.
	* mi/mi-out.c (mi_field_int): Likewise.
	windows-nat.c (windows_pid_to_exec_file): Likewise.
	(windows_create_inferior): Likewise.
	(_initialize_check_for_gdb_ini): Likewise.