convert the rest of the users of pointer_map to hash_map

convert the rest of the users of pointer_map to hash_map

gcc/

	* hash-map.h (default_hashmap_traits): Adjust overloads of hash
	function to not conflict.
	* alias.c, cfgexpand.c, dse.c, except.h, gimple-expr.c,
	gimple-ssa-strength-reduction.c, gimple-ssa.h, ifcvt.c,
	lto-streamer-out.c, lto-streamer.h, tree-affine.c, tree-affine.h,
	tree-predcom.c, tree-scalar-evolution.c, tree-ssa-loop-im.c,
	tree-ssa-loop-niter.c, tree-ssa.c, value-prof.c: Use hash_map instead
	of pointer_map.

gcc/cp/

	* cp-tree.h, pt.c: Use hash_map instead of pointer_map.

gcc/lto/

	* lto-partition.c, lto.c: Use hash_map instead of pointer_map.

From-SVN: r213703