Change class inchash to move into a inchash namespace as requested.
The class is now inchash::hash

Rename iterative_hstate_expr to inchash::add_expr
... and convert existing users. It wasn't possible to use hash::,
because that lead to name space conflicts with cp and objc.

So class inchash is now inchash::hash and iterative_hstate_expr
is now inchash::add_expr.

gcc/:

2014-07-31  Andi Kleen  <ak@linux.intel.com>

	* inchash.h (inchash): Change inchash class to namespace.
	(class hash): ... Rename from inchash.
	(add_object): Move from macro to class template.
	* lto-streamer-out.c (hash_tree): Change inchash
	to inchash::hash.
	* tree.c (build_type_attribute_qual_variant): Dito.
	(type_hash_list): Dito.
	(attribute_hash_list): Dito.
	(iterative_hstate_expr): Rename to inchash::add_expr
	(build_range_type_1): Change inchash to inchash::hash
	and use hash::add_expr.
	(build_array_type_1): Dito.
	(build_function_type): Dito
	(build_method_type_directly): Dito.
	(build_offset_type): Dito.
	(build_complex_type): Dito.
	(make_vector_type): Dito.
	* tree.h (iterative_hash_expr): Dito.

gcc/lto/:

2014-07-31  Andi Kleen  <ak@linux.intel.com>

	* lto.c (hash_canonical_type): Use inchash::hash
	and use inchash::add_expr.
	(iterative_hash_canonical_type): Dito.

From-SVN: r213394