Use infer instead of side-effect for ranges.

Use infer instead of side-effect for ranges.

Rename the files and classes to reflect the term infer rather than side-effect.

	* Makefile.in (OBJS): Use gimple-range-infer.o.
	* gimple-range-cache.cc (ranger_cache::fill_block_cache): Change msg.
	(ranger_cache::range_from_dom): Rename var side_effect to infer.
	(ranger_cache::apply_inferred_ranges): Rename from apply_side_effects.
	* gimple-range-cache.h: Include gimple-range-infer.h.
	(class ranger_cache): Adjust prototypes, use infer_range_manager.
	* gimple-range-infer.cc: Rename from gimple-range-side-effects.cc.
	(gimple_infer_range::*): Rename from stmt_side_effects.
	(infer_range_manager::*): Rename from side_effect_manager.
	* gimple-range-side-effect.cc: Rename.
	* gimple-range-side-effect.h: Rename.
	* gimple-range-infer.h: Rename from gimple-range-side-effects.h.
	(class gimple_infer_range): Rename from stmt_side_effects.
	(class infer_range_manager): Rename from side_effect_manager.
	* gimple-range.cc (gimple_ranger::register_inferred_ranges): Rename
	from register_side_effects.
	* gimple-range.h (register_inferred_ranges): Adjust prototype.
	* range-op.h: Adjust comment.
	* tree-vrp.cc (rvrp_folder::pre_fold_bb): Use register_inferred_ranges.
	(rvrp_folder::post_fold_bb): Use register_inferred_ranges.