add a parser to filter-aaaa.so and pass in the parameters

- make some cfg-parsing functions global so they can be run
  from filter-aaaa.so
- add filter-aaaa options to the hook module's parser
- mark filter-aaaa options in named.conf as obsolete, remove
  from named and checkconf, and update the filter-aaaa test not to
  use checkconf anymore
- remove filter-aaaa-related struct members from dns_view

lib/ns/hooks.c

@@ -330,6 +330,7 @@ unload_library(ns_hook_module_t **hmodp) {
 isc_result_t
 ns_hookmodule_load(const char *libname, const char *parameters,
 		   const char *file, unsigned long line,
+		   const void *cfg, void *actx,
 		   ns_hookctx_t *hctx, ns_hooktable_t *hooktable)
 {
 	isc_result_t result;
@@ -342,8 +343,9 @@ ns_hookmodule_load(const char *libname, const char *parameters,
 		      "loading module '%s'", libname);
 
 	CHECK(load_library(hctx->mctx, libname, &module));
-	CHECK(module->register_func(parameters, file, line, hctx,
-				    hooktable, &module->inst));
+	CHECK(module->register_func(parameters, file, line,
+				    cfg, actx, hctx, hooktable,
+				    &module->inst));
 
 	APPEND(hook_modules, module, link);
 	result = ISC_R_SUCCESS;