BUG#21585 The --help option shows a screen of command options for the ndbd,ndb_mgmd, ndb_mgm

           and other commands related to ndb. For all of these, the help screen contains 
          "Ndb.cfg" string. Now i change the "Ndb.cfg" to "my.cnf" because "Ndb.cfg" is obsolete.


ndb/include/util/ndb_opts.h:
  Change help info from Ndb.cfg to my.cnf in the header file.
ndb/test/ndbapi/flexScan.cpp:
  Change help info from Ndb.cfg to my.cnf.
ndb/tools/ndb_config.cpp:
  Change help info from Ndb.cfg to my.cnf

ndb/include/util/ndb_opts.h

@@ -49,7 +49,7 @@ my_bool opt_core;
   { "ndb-connectstring", OPT_NDB_CONNECTSTRING, \
     "Set connect string for connecting to ndb_mgmd. " \
     "Syntax: \"[nodeid=<id>;][host=]<hostname>[:<port>]\". " \
-    "Overides specifying entries in NDB_CONNECTSTRING and Ndb.cfg", \
+    "Overrides specifying entries in NDB_CONNECTSTRING and my.cnf", \
     (gptr*) &opt_connect_str, (gptr*) &opt_connect_str, 0, \
     GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },\
   { "ndb-shm", OPT_NDB_SHM,\

ndb/test/ndbapi/flexScan.cpp

@@ -27,7 +27,7 @@
 	 verify delete
 
        Arguments:
-        -f Location of Ndb.cfg file, default Ndb.cfg
+        -f Location of my.cnf file, default my.cnf
         -t Number of threads to start, default 1
         -o Number of operations per loop, default 500	-l Number of loops to run, default 1, 0=infinite
         -a Number of attributes, default 25
@@ -829,7 +829,7 @@ static int createTables(Ndb* pMyNdb)
 static void printUsage()
 {
   ndbout << "Usage of flexScan:" << endl;
-  ndbout << "-f <path> Location of Ndb.cfg file, default: Ndb.cfg" << endl;
+  ndbout << "-f <path> Location of my.cnf file, default: my.cnf" << endl;
   ndbout << "-t <int>  Number of threads to start, default 1" << endl;
   ndbout << "-o <int>  Number of operations per loop, default 500" << endl;
   ndbout << "-l <int>  Number of loops to run, default 1, 0=infinite" << endl;

ndb/tools/ndb_config.cpp

@@ -64,7 +64,7 @@ static struct my_option my_long_options[] =
   { "ndb-connectstring", 256,
     "Set connect string for connecting to ndb_mgmd. " 
     "Syntax: \"[nodeid=<id>;][host=]<hostname>[:<port>]\". " 
-    "Overides specifying entries in NDB_CONNECTSTRING and Ndb.cfg", 
+    "Overrides specifying entries in NDB_CONNECTSTRING and my.cnf", 
     (gptr*) &g_connectstring, (gptr*) &g_connectstring, 
     0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
   { "nodes", 256, "Print nodes",