ipa.c (function_and_variable_visibility): Decompose DECL_ONE_ONLY groups when we know they are controlled by LTO.

	* ipa.c (function_and_variable_visibility): Decompose DECL_ONE_ONLY
	groups when we know they are controlled by LTO.
	* varasm.c (default_binds_local_p_1): If object is in other partition,
	it will be resolved locally.

	* lto-partition.c (get_symbol_class): Only unforced DECL_ONE_ONLY 
	needs duplicating, not generic COMDAT.

From-SVN: r207489