Fixed compiler warnings (Mostly VC++):

- Removed not used variables
- Changed some ulong parameters/variables to ulonglong (possible serious bug)
- Added casts to get rid of safe assignment from longlong to long (and similar)
- Added casts to function parameters
- Fixed signed/unsigned compares
- Added some constructores to structures
- Removed some not portable constructs

Better fix for bug Bug #21428 "skipped 9 bytes from file: socket (3)" on "mysqladmin shutdown"
(Added new parameter to net_clear() to define when we want the communication buffer to be emptied)


client/mysql.cc:
  Removed not used variable
client/mysqldump.c:
  Fixed compiler warning
client/mysqlslap.c:
  Fixed compiler warning
client/mysqltest.c:
  Fixed compiler warning
extra/replace.c:
  Fixed compiler warning
include/my_global.h:
  Fixed compiler warning
include/mysql_com.h:
  Changed prototype for net_clear()
libmysql/libmysql.c:
  Changed prototype for net_clear()
mysys/base64.c:
  Fixed compiler warning (function definition and prototype didn't match)
mysys/my_thr_init.c:
  AFter merge fixes
mysys/my_vle.c:
  Fixed compiler warning
sql/event_data_objects.cc:
  Fixed compiler warning
sql/event_scheduler.cc:
  Removed not used variable
sql/field.cc:
  Removed not used variables
  Fixed compiler warning
sql/gen_lex_hash.cc:
  Fixed compiler warning
sql/ha_partition.h:
  Fixed compiler warning
sql/handler.cc:
  Fixed compiler warning
sql/item.cc:
  Fixed compiler warning
sql/item_create.cc:
  Fixed compiler warning
sql/item_func.cc:
  Fixed compiler warning
sql/item_strfunc.cc:
  Fixed compiler warning
sql/item_timefunc.cc:
  Fixed compiler warning
sql/item_xmlfunc.cc:
  Fixed compiler warning
sql/log.cc:
  Fixed compiler warning
sql/log_event.cc:
  Fixed compiler warning
sql/log_event.h:
  Fixed compiler warning
sql/mysql_priv.h:
  Fixed too short 'select_type'
sql/net_serv.cc:
  Added argument to net_clear() if we should empty the communication buffer.
sql/opt_range.cc:
  Fixed compiler warning
sql/partition_info.cc:
  Fixed compiler warning
sql/rpl_injector.h:
  Fixed compiler warning
sql/set_var.cc:
  Fixed compiler warning
sql/slave.cc:
  Fixed compiler warning
sql/sp_head.cc:
  Fixed compiler warning
sql/sql_base.cc:
  Fixed compiler warning
sql/sql_db.cc:
  Fixed compiler warning
sql/sql_delete.cc:
  Fixed compiler warning
sql/sql_insert.cc:
  Fixed compiler warning
sql/sql_lex.h:
  Fixed compiler warning
sql/sql_parse.cc:
  Fixed compiler warning
sql/sql_partition.cc:
  Fixed compiler warning
sql/sql_plugin.cc:
  Fixed compiler warning
sql/sql_prepare.cc:
  Fixed compiler warning
sql/sql_rename.cc:
  Fixed compiler warning
sql/sql_select.cc:
  Fixed compiler warning
sql/sql_show.cc:
  Fixed compiler warning
sql/sql_table.cc:
  Fixed compiler warning
sql/sql_trigger.cc:
  Fixed compiler warning
sql-common/client.c:
  Better fix for bug Bug #21428 "skipped 9 bytes from file: socket (3)" on "mysqladmin shutdown"
sql-common/my_time.c:
  Fixed compiler warning
sql/sql_union.cc:
  Fixed compiler warning
sql/sql_update.cc:
  Fixed compiler warning
sql/sql_view.cc:
  Fixed compiler warning
sql/sql_yacc.yy:
  Fixed compiler warning
sql/table.cc:
  Fixed compiler warning
storage/archive/azio.c:
  Fixed compiler warning
storage/csv/ha_tina.cc:
  Removed not used code
storage/myisam/mi_unique.c:
  Fixed compiler warning
storage/ndb/include/util/OutputStream.hpp:
  Fixed compiler warning
storage/ndb/include/util/SocketAuthenticator.hpp:
  Fixed compiler warning
storage/ndb/src/kernel/vm/Pool.hpp:
  Fixed compiler warning
strings/ctype-simple.c:
  Fixed compiler warning
strings/my_strchr.c:
  Fixed compiler warning

sql/sql_trigger.cc

@@ -330,7 +330,7 @@ bool Table_triggers_list::create_trigger(THD *thd, TABLE_LIST *tables,
   TABLE *table= tables->table;
   char file_buff[FN_REFLEN], trigname_buff[FN_REFLEN];
   LEX_STRING file, trigname_file;
-  LEX_STRING *trg_def, *name;
+  LEX_STRING *trg_def;
   LEX_STRING definer_user;
   LEX_STRING definer_host;
   ulonglong *trg_sql_mode;
@@ -845,7 +845,7 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
         DBUG_RETURN(1);
 
       List_iterator_fast<LEX_STRING> it(triggers->definitions_list);
-      LEX_STRING *trg_create_str, *trg_name_str;
+      LEX_STRING *trg_create_str;
       ulonglong *trg_sql_mode;
 
       if (triggers->definition_modes_list.is_empty() &&
@@ -962,7 +962,7 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
           goto err_with_lex_cleanup;
         }
 
-        lex.sphead->set_info(0, 0, &lex.sp_chistics, *trg_sql_mode);
+        lex.sphead->set_info(0, 0, &lex.sp_chistics, (ulong) *trg_sql_mode);
 
         triggers->bodies[lex.trg_chistics.event]
                              [lex.trg_chistics.action_time]= lex.sphead;
@@ -1283,7 +1283,6 @@ Table_triggers_list::change_table_name_in_triggers(THD *thd,
 {
   char path_buff[FN_REFLEN];
   LEX_STRING *def, *on_table_name, new_def;
-  ulonglong *sql_mode;
   ulong save_sql_mode= thd->variables.sql_mode;
   List_iterator_fast<LEX_STRING> it_def(definitions_list);
   List_iterator_fast<LEX_STRING> it_on_table_name(on_table_names_list);
@@ -1297,7 +1296,7 @@ Table_triggers_list::change_table_name_in_triggers(THD *thd,
   while ((def= it_def++))
   {
     on_table_name= it_on_table_name++;
-    thd->variables.sql_mode= *(it_mode++);
+    thd->variables.sql_mode= (ulong) *(it_mode++);
 
     /* Construct CREATE TRIGGER statement with new table name. */
     buff.length(0);