Move condexpr_adjust into gimple-range-fold

Move condexpr_adjust into gimple-range-fold

Certain components of GORI were needed in order to process a COND_EXPR
expression and calculate the 2 operands as if they were true and false edges
based on the condition.   With GORI available from the range_query
objcet now, this can be moved into the fold_using_range code where it
really belongs.

	* gimple-range-edge.h (range_query::condexpr_adjust): Delete.
	* gimple-range-fold.cc (fold_using_range::range_of_range_op): Use
	gori_ssa routine.
	(fold_using_range::range_of_address): Likewise.
	(fold_using_range::range_of_phi): Likewise.
	(fold_using_range::condexpr_adjust): Relocated from gori_compute.
	(fold_using_range::range_of_cond_expr): Use local condexpr_adjust.
	(fur_source::register_outgoing_edges): Use gori_ssa routine.
	* gimple-range-fold.h (gori_ssa): Rename from gori_bb.
	(fold_using_range::condexpr_adjust): Add prototype.
	* gimple-range-gori.cc (gori_compute::condexpr_adjust): Relocate.
	* gimple-range-gori.h (gori_compute::condexpr_adjust): Delete.