* gcc-interface/trans.c (gigi): Set DECL_IGNORED_P on EH functions.
	(gnat_to_gnu) <N_Op_Eq>: Restore the value of input_location
	before translating the top-level node.
	(lvalue_required_p) <N_Function_Call>: Return 1 if !constant.
	<N_Object_Declaration>: Likewise.
	<N_Assignment_Statement>: Likewise.
	<N_Unchecked_Type_Conversion>: Likewise.
	(call_to_gnu): Remove kludge.
	(gnat_to_gnu) <N_Return_Statement>: When not optimizing, force labels
	associated with user returns to be preserved.
	(gnat_to_gnu): Add special code to deal with boolean rvalues.
	* gcc-interface/utils2.c (compare_arrays): Set input_location on all
	comparisons.
	(build_unary_op) <ADDR_EXPR>: Call build_fold_addr_expr.
	<INDIRECT_REF>: Call build_fold_indirect_ref.

From-SVN: r158388