fixed some mgmapi docs

added example to ndbapi docs


ndb/include/mgmapi/mgmapi.h:
  fixed some mgmapi docs
ndb/include/ndbapi/Ndb.hpp:
  added examples
ndb/src/mgmapi/mgmapi.cpp:
  removed unused parameter

ndb/include/ndbapi/Ndb.hpp

@@ -435,6 +435,10 @@
  */
 
 #ifndef DOXYGEN_SHOULD_SKIP_INTERNAL
+/**
+ * @page ndbapi_async.cpp ndbapi_async.cpp
+ * @include ndbapi_async.cpp 
+ */
 /**
  * @page ndbapi_async1.cpp ndbapi_async1.cpp
  * @include ndbapi_async1.cpp 
@@ -456,6 +460,11 @@
  * @include ndbapi_scan.cpp
  */
 
+/**
+ * @page ndbapi_event.cpp ndbapi_event.cpp
+ * @include ndbapi_event.cpp
+ */
+
 
 /**
    @page secAdapt  Adaptive Send Algorithm

ndb/src/mgmapi/mgmapi.cpp

@@ -629,7 +629,6 @@ ndb_mgm_get_status(NdbMgmHandle handle)
     malloc(sizeof(ndb_mgm_cluster_state)+
 	   noOfNodes*(sizeof(ndb_mgm_node_state)+sizeof("000.000.000.000#")));
 
-  state->hostname= 0;
   state->no_of_nodes= noOfNodes;
   ndb_mgm_node_state * ptr = &state->node_states[0];
   int nodeId = 0;