* cgraph.c (cgraph_get_body): New function based on lto.c
	implementation.
	* cgraph.h (cgraph_get_body): Declare.
	* cgraphclones.c (cgraph_create_virtual_clone): Commonize WPA and LTO paths.
	* cgraphunit.c (expand_function): Get body prior expanding.
	* ipa.c (function_and_variable_visibility): Use gimple_has_body_p test.
	* lto-cgraph.c (lto_output_node): Do not stream bodies we don't really need.
	* passes.c (do_per_function_toporder): Get body.
	* tree-inline.c (expand_call_inline): Get body prior inlining it.
	* tree-ssa-structalias.c (ipa_pta_execute): Get body; skip clones.

	* lto.c (lto_materialize_function): Do not read body anymore.

From-SVN: r201537