* lto-cgraph.c (output_varpool): Forward declare; work on encoder.
	(lto_varpool_encoder_new, lto_varpool_encoder_delete, lto_varpool_encoder_encode
	lto_varpool_encoder_lookup, lto_varpool_encoder_deref, lto_varpool_encoder_size,
	lto_varpool_encoder_encode_initializer_p,
	lto_set_varpool_encoder_encode_initializer): New functions.
	(lto_output_cgraph): Take vset parameter too; compute varpool encoder;
	call output_varpool.
	(input_varpool_node): Do not always set analyzed.
	(input_cgraph_1): Return vector of cgraph nodes.
	(input_varpool_1): Return vector of varpools.
	(input_cgraph): Free the vectors.
	* lto-streamer-out.c (lto_output_ts_decl_common_tree_pointers):
	output only initializers needed.
	(lto_output): Only call output_cgraph.
	(produce_asm_for_decls): Call lto_varpool_encoder_delete.
	* lto-section-out.c (lto_new_out_decl_state): Initialize
	state->varpool_node_encoder.
	* lto-streamer.h (lto_varpool_encoder_d): New.
	(lto_out_decl_state, lto_file_decl_data): Add varpool_node_encoder.	
	(lto_cgraph_encoder_delete, output_cgraph): Update prototype.
	(lto_varpool_encoder_deref, lto_varpool_encoder_lookup,
	lto_varpool_encoder_encode, lto_varpool_encoder_delete,
	lto_varpool_encoder_encode_initializer_p, lto_varpool_encoder_new):
	Declare.
	(output_varpool, input_varpool): Remove declarations.

	* lto.c (lto_1_to_1_map): Partition only needed nodes.

From-SVN: r159062