* cp-tree.h (lang_type): Replace abstract_virtuals with pure_virtuals.
	(CLASSTYPE_ABSTRACT_VIRTUALS): Rename to ...
	(CLASSTYPE_PURE_VIRTUALS): ... this.
	(lang_decl_flags): Replace abstract_virtual with pure_virtual.
	(DECL_ABSTRACT_VIRTUAL_P): Rename to ...
	(DECL_PURE_VIRTUAL_P): ... this.
	(get_abstract_virtuals): Rename to ...
	(get_pure_virtuals): ... this.
	* call.c (build_new_method_call): Replace DECL_PURE_VIRTUAL_P with
	DECL_ABSTRACT_VIRTUAL_P.  Replace CLASSTYPE_ABSTRACT_VIRTUALS with
	CLASSTYPE_PURE_VIRTUALS.
	* class.c (build_vtable_entry): Likewise.
	(finish_struct_bits): Likewise.  Call get_pure_virtuals, not
	get_abstract_virtuals.
	(build_vtbl_initializer): Likewise.
	(override_one_vtable): Likewise.
	(check_methods): Likewise.
	* decl.c (duplicate_decls): Likewise.
	(redeclaration_error_message): Likewise.
	(lang_mark_tree): Likewise.
	* decl2.c (grok_function_init): Likewise.
	(import_export_vtable): Likewise.
	(import_expor_class): Likewise.
	* typeck2.c (abstract_virtuals_error): Likewise.
	* xref.c (GNU_xref_member): Likewise.
	* search.c (get_abstract_virtuals): Rename to get_pure_virtuals.

From-SVN: r31114