* decl.c (add_decl_to_level): Remove TREE_PERMANENT assertion.
	(init_decl_processing): Don't set TREE_PERMANENT for the
	error_mark_node.
	(start_decl): Don't rebuild non-permanent ARRAY_TYPEs.
	(grokdeclarator): Likewise.
	(grokparms): Don't check TREE_PERMANENT when building up lists.
	* decl2.c (grokfield): Don't assert TREE_PERMANENT.
	(mark_inline_for_output): Likewise.
	* expr.c (cplus_expand_expr): Don't check TREE_PERMANENT.
	* init.c (build_offset_ref): Don't check TREE_PERMANENT.
	* lex.c (check_newline): Don't check ggc_p; it is always one.
	* pt.c (process_template_parm): Don't check TREE_PERMANENT.
	* spew.c (yylex): Don't copy_node or probe_obstacks for
	non-permanent CONSTANTs and STRINGs.
	* tree.c (build_cplus_array_type_1): Don't fuss with
	TREE_PERMANENT on ARRAY_TYPEs.

From-SVN: r29350