* symtab.c (symtab_node::verify_base): Verify body_removed->!definiton
	* lto-cgraph.c (lto_output_varpool_node): Do not keep definition of
	variables in boundary that have no inlitalizer encoded and are
	not aliases.
	* varasm.c (default_binds_local_p_2): External definitions do not
	count as definitions here.

From-SVN: r220749