* gcc.c: #include "gansidecl.h".
	(PROTO,VPROTO,PVPROTO,VPROTO,VA_START,NULL): Delete.
	(GENERIC_PTR,NULL_PTR,P_tmpdir): Delete.
	(choose_temp_base): Declare as extern, delete internal copy.
	(concat): Rewrite to take a variable number of arguments.
	(choose_temp_base_try,concat[346]): Delete.
	(translate_options,set_spec,process_command,do_spec_1,
	is_directory,main): Always use concat, not concat[346].  Pass
	NULL_PTR as trailing arg to concat.

From-SVN: r11794