Rename clerk and CDB Speed-Up

CDB did many "bitty" reads/writes when scanning or writing hash tables -
change these to bult reads and writes to speed up.

CDB also added capabilities to fetch positions and get keys by position
to help with iclerk role.

src/leveled_iclerk.erl

@@ -0,0 +1,90 @@
+
+
+-module(leveled_iclerk).
+
+-behaviour(gen_server).
+
+-include("../include/leveled.hrl").
+
+-export([init/1,
+        handle_call/3,
+        handle_cast/2,
+        handle_info/2,
+        terminate/2,
+        clerk_new/1,
+        clerk_compact/3,
+        clerk_remove/2,
+        clerk_stop/1,
+        code_change/3]).      
+
+-include_lib("eunit/include/eunit.hrl").
+
+-define(KEYS_TO_CHECK, 100).
+
+-record(state, {owner :: pid()}).
+
+%%%============================================================================
+%%% API
+%%%============================================================================
+
+clerk_new(Owner) ->
+    {ok, Pid} = gen_server:start(?MODULE, [], []),
+    ok = gen_server:call(Pid, {register, Owner}, infinity),
+    {ok, Pid}.
+    
+clerk_compact(Pid, InkerManifest, Penciller) ->
+    gen_server:cast(Pid, {compact, InkerManifest, Penciller}),
+    ok.
+
+clerk_remove(Pid, Removals) ->
+    gen_server:cast(Pid, {remove, Removals}),
+    ok.
+
+clerk_stop(Pid) ->
+    gen_server:cast(Pid, stop).
+
+%%%============================================================================
+%%% gen_server callbacks
+%%%============================================================================
+
+init([]) ->
+    {ok, #state{}}.
+
+handle_call({register, Owner}, _From, State) ->
+    {reply, ok, State#state{owner=Owner}}.
+
+handle_cast({compact, InkerManifest, Penciller, Timeout}, State) ->
+    ok = journal_compact(InkerManifest, Penciller, Timeout, State#state.owner),
+    {noreply, State};
+handle_cast({remove, _Removals}, State) ->
+    {noreply, State};
+handle_cast(stop, State) ->
+    {stop, normal, State}.
+
+handle_info(_Info, State) ->
+    {noreply, State}.
+
+terminate(_Reason, _State) ->
+    ok.
+
+code_change(_OldVsn, State, _Extra) ->
+    {ok, State}.
+
+
+%%%============================================================================
+%%% Internal functions
+%%%============================================================================
+
+journal_compact(_InkerManifest, _Penciller, _Timeout, _Owner) ->
+    ok.
+
+check_all_files(_InkerManifest) ->
+    ok.
+
+window_closed(_Timeout) ->
+    true.
+
+
+%%%============================================================================
+%%% Test
+%%%============================================================================