gcc/
	* hash-traits.h (ggc_hasher): Rename to...
	(ggc_remover): ...this and remove typedefs.
	(ggc_cache_hasher): Update accordingly.  Add typedefs.
	(ggc_ptr_hash): New class.
	* hash-table.h: Update comment.
	* cfgloop.h (loop_exit_hasher): Inherit from ggc_ptr_hash rather than
	ggc_hasher.
	* cgraph.h (section_name_hasher, cgraph_edge_hasher): Likewise.
	(tree_descriptor_hasher): Likewise.
	* cgraph.c (function_version_hasher): Likewise.
	* dwarf2out.c (indirect_string_hasher, dwarf_file_hasher): Likewise.
	(decl_die_hasher, block_die_hasher, decl_loc_hasher): Likewise.
	(dw_loc_list_hasher, addr_hasher): Likewise.
	* function.h (used_type_hasher): Likewise.
	* function.c (temp_address_hasher): Likewise.
	* gimple-ssa.h (tm_restart_hasher, ssa_name_hasher): Likewise.
	* libfuncs.h (libfunc_hasher): Likewise.
	* lto-streamer.h (decl_state_hasher): Likewise.
	* optabs.c (libfunc_decl_hasher): Likewise.
	* tree-scalar-evolution.c (scev_info_hasher): Likewise.
	* varasm.c (section_hasher, object_block_hasher): Likewise.
	(const_rtx_desc_hasher): Likewise.
	* config/darwin.c (indirection_hasher, cfstring_hasher): Likewise.
	* config/rs6000/rs6000.c (toc_hasher, builtin_hasher): Likewise.

gcc/c-family/
	* c-common.c (c_type_hasher): Inherit from ggc_ptr_hash rather than
	ggc_hasher.

gcc/cp/
	* constexpr.c (constexpr_fundef_hasher): Inherit from ggc_ptr_hash
	rather than ggc_hasher.
	(constexpr_call_hasher): Likewise.
	* cp-tree.h (cxx_int_tree_map_hasher, named_label_hasher): Likewise.
	* decl.c (typename_hasher): Likewise.
	* mangle.c (conv_type_hasher): Likewise.
	* pt.c (spec_hasher): Likewise.
	* tree.c (cplus_array_hasher, list_hasher): Likewise.
	* typeck2.c (abstract_type_hasher): Likewise.

gcc/fortran/
	* trans-decl.c (module_hasher): Likewise.
	* trans.h (module_decl_hasher): Likewise.

gcc/java/
	* java-tree.h (treetreehasher): Inherit from ggc_ptr_hash
	rather than ggc_hasher.
	(ict_hasher, type_assertion_hasher): Likewise.

gcc/objc/
	* objc-act.c (objc_string_hasher): Inherit from ggc_ptr_hash
	rather than ggc_hasher.

From-SVN: r224959