gcc.c (add_prefix, [...]): Remove penultimate parameter.

2004-08-03  Paolo Bonzini <bonzini@gnu.org>

	* gcc.c (add_prefix, add_sysrooted_prefix): Remove
	penultimate parameter.  All callers adjusted.
	(struct prefix_list): Remove used_flag_ptr.
	(find_a_file): Do not set *pl->used_flag_ptr.
	(warn_B, warn_std_ptr): Remove.

From-SVN: r85469