revert: symtab.c (symtab_node::reset_section): New method.

revert: symtab.c (symtab_node::reset_section): New method.

	Revert:
	* symtab.c (symtab_node::reset_section): New method.
	* cgraph.c (cgraph_node_cannot_be_local_p_1): Accept non-local
	for localization.
	* cgraph.h (reset_section): Declare.
	* ipa-inline-analysis.c (do_estimate_growth): Check for comdat groups;
	do not consider comdat locals.
	* cgraphclones.c (set_new_clone_decl_and_node_flags): Get section
	for new symbol.
	* ipa-visiblity.c (cgraph_externally_visible_p): Cleanup.
	(update_visibility_by_resolution_info): Consider UNDEF; fix checking;
	reset sections of symbols dragged out of the comdats.
	(function_and_variable_visibility): Reset sections of localized symbols.

From-SVN: r211710