gcc.c (struct prefix_list): Add forward declaration.

2004-05-23 Paolo Bonzini <bonzini@gnu.org>

	* gcc.c (struct prefix_list): Add forward declaration.
	(do_spec_path): New function, extracted from...
	(do_spec_1) <'D'>: ... here.  Drop support for
	SPACE_AFTER_L_OPTION.
	(do_spec_1) <'I'>: Use do_spec_path.
	(process_command): Do not store the 'include' suffix
	in include_prefixes.
	* system.h: Poison SPACE_AFTER_L_OPTION.

From-SVN: r82197