* tree.h (DECL_BY_REFERENCE): Note that it is also valid for
	!TREE_STATIC VAR_DECLs.
	* dwarf2out.c (loc_by_reference, gen_decl_die): Handle
	DECL_BY_REFERENCE on !TREE_STATIC VAR_DECLs.
	(gen_variable_die): Likewise.  Don't look at TREE_PRIVATE if
	DECL_BY_REFERENCE is valid.
	* dbxout.c (DECL_ACCESSIBILITY_CHAR): Don't look at TREE_PRIVATE
	for PARM_DECLs, RESULT_DECLs or !TREE_STATIC VAR_DECLs.
	* tree-nested.c (get_nonlocal_debug_decl, get_local_debug_decl):
	Copy DECL_BY_REFERENCE.
	(struct nesting_copy_body_data): New type.
	(nesting_copy_decl): New function.
	(finalize_nesting_tree_1): Remap types of debug_var_chain variables,
	if they have variable length.

From-SVN: r146808