Fixes during review of new code

- Mostly indentation fixes
- Added missing test
- Ensure that Item_func_case() checks for stack overruns
- Use real_item() instead of (Item_ref*) item
- Fixed wrong error handling


myisam/mi_unique.c:
  Improved comments
myisam/myisampack.c:
  Updated version number
mysql-test/r/group_by.result:
  Added test that was lost during earlier merge
mysql-test/r/information_schema.result:
  Safety fix: Drop procedures before used
mysql-test/t/group_by.test:
  Added test that was lost during earlier merge
mysql-test/t/information_schema.test:
  Safety fix: Drop procedures before used
mysys/hash.c:
  Updated comment
sql/field.cc:
  false -> FALSE
sql/ha_ndbcluster.cc:
  Fix some style issues
  - No () around argument to 'case'
  - Space before ( in switch and if
  - Removed 'goto'
  - Added {}
  - Added () to make expressions easier to read
  - my_snprintf -> strmov
sql/handler.cc:
  if( -> if (
sql/item.cc:
  Indentation changes
sql/item.h:
  false -> FALSE
sql/item_cmpfunc.cc:
  Ensure that Item_func_case() check for stack overrun properly
sql/item_cmpfunc.h:
  Ensure that Item_func_case() check for stack overrun properly
sql/item_func.cc:
  Indentation fixes
  Fixed wrong goto label
sql/mysqld.cc:
  Remove test for opt_disable_networking as this flag can never be set here
sql/opt_range.cc:
  Simplify code
sql/sql_class.h:
  Move define out from middle of class definition
sql/sql_parse.cc:
  Remove extra empty lines
sql/sql_select.cc:
  use real_item() instead of (Item_ref*) item
  Modifed function comment to be align with others
  Simple optimization
sql/sql_union.cc:
  Portability fix:
  Don't use 'bool_variable|=...'
sql/sql_view.cc:
  Move List_iterator_fast out from loops (rewind is faster than creating a new itearator)
strings/ctype-utf8.c:
  if( -> if (
strings/ctype.c:
  Remove disabled code
strings/decimal.c:
  Indentation fixes
strings/xml.c:
  Indentation fixes

sql/opt_range.cc

@@ -3528,15 +3528,12 @@ static SEL_TREE *get_mm_tree(PARAM *param,COND *cond)
   {
     /* Optimize NOT BETWEEN and NOT IN */
     Item *arg= cond_func->arguments()[0];
-    if (arg->type() == Item::FUNC_ITEM)
-    {
-      cond_func= (Item_func*) arg;
-      if (cond_func->select_optimize() == Item_func::OPTIMIZE_NONE)
-        DBUG_RETURN(0);
-      inv= TRUE;
-    }
-    else
+    if (arg->type() != Item::FUNC_ITEM)
       DBUG_RETURN(0);
+    cond_func= (Item_func*) arg;
+    if (cond_func->select_optimize() == Item_func::OPTIMIZE_NONE)
+      DBUG_RETURN(0);
+    inv= TRUE;
   }
   else if (cond_func->select_optimize() == Item_func::OPTIMIZE_NONE)
     DBUG_RETURN(0);			       
@@ -8153,7 +8150,7 @@ int QUICK_GROUP_MIN_MAX_SELECT::get_next()
                   (have_max && have_min && (max_res == 0)));
     }
     /*
-      If this is a just a GROUP BY or DISTINCT without MIN or MAX and there
+      If this is just a GROUP BY or DISTINCT without MIN or MAX and there
       are equality predicates for the key parts after the group, find the
       first sub-group with the extended prefix.
     */