Resolved merge from 4.1 -> 5.0 (mainly Guilhem's work with mysqldump)

BitKeeper/etc/ignore:
  auto-union
configure.in:
  Auto merged
include/my_global.h:
  Auto merged
include/my_sys.h:
  Auto merged
include/mysql.h:
  Auto merged
include/mysqld_error.h:
  Auto merged
mysql-test/mysql-test-run.sh:
  Auto merged
mysql-test/r/alter_table.result:
  Auto merged
mysql-test/r/ndb_autodiscover.result:
  Auto merged
mysql-test/r/null.result:
  Auto merged
mysql-test/r/ps_2myisam.result:
  Auto merged
mysql-test/r/ps_3innodb.result:
  Auto merged
mysql-test/r/ps_4heap.result:
  Auto merged
mysql-test/r/ps_5merge.result:
  Auto merged
mysql-test/r/ps_6bdb.result:
  Auto merged
mysql-test/t/alter_table.test:
  Auto merged
mysql-test/t/null.test:
  Auto merged
ndb/src/mgmsrv/main.cpp:
  Auto merged
sql/field.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/slave.h:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_db.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/share/czech/errmsg.txt:
  Auto merged
sql/share/danish/errmsg.txt:
  Auto merged
sql/share/dutch/errmsg.txt:
  Auto merged
sql/share/english/errmsg.txt:
  Auto merged
sql/share/estonian/errmsg.txt:
  Auto merged
sql/share/french/errmsg.txt:
  Auto merged
sql/share/german/errmsg.txt:
  Auto merged
sql/share/greek/errmsg.txt:
  Auto merged
sql/share/hungarian/errmsg.txt:
  Auto merged
sql/share/italian/errmsg.txt:
  Auto merged
sql/share/japanese/errmsg.txt:
  Auto merged
sql/share/korean/errmsg.txt:
  Auto merged
sql/share/norwegian-ny/errmsg.txt:
  Auto merged
sql/share/norwegian/errmsg.txt:
  Auto merged
sql/share/polish/errmsg.txt:
  Auto merged
sql/share/portuguese/errmsg.txt:
  Auto merged
sql/share/romanian/errmsg.txt:
  Auto merged
sql/share/russian/errmsg.txt:
  Auto merged
sql/share/serbian/errmsg.txt:
  Auto merged
sql/share/slovak/errmsg.txt:
  Auto merged
sql/share/spanish/errmsg.txt:
  Auto merged
sql/share/swedish/errmsg.txt:
  Auto merged
sql/share/ukrainian/errmsg.txt:
  Auto merged

1 files changed, 21 insertions, 4 deletions

diff --git a/sql/field.cc b/sql/field.cc
index 1275e1bbb8e..56e3ab71bd8 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -4418,6 +4418,8 @@ String *Field_string::val_str(String *val_buffer __attribute__((unused)),
 
 int Field_string::cmp(const char *a_ptr, const char *b_ptr)
 {
+  uint a_len, b_len;
+
   if (field_charset->strxfrm_multiply > 1)
   {
     /*
@@ -4429,10 +4431,19 @@ int Field_string::cmp(const char *a_ptr, const char *b_ptr)
                                             (const uchar*) b_ptr,
                                             field_length);
   }
-  return my_strnncoll(field_charset,(const uchar*) a_ptr, field_length,
-                                    (const uchar*) b_ptr, field_length);
+  if (field_charset->mbmaxlen != 1)
+  {
+    uint char_len= field_length/field_charset->mbmaxlen;
+    a_len= my_charpos(field_charset, a_ptr, a_ptr + field_length, char_len);
+    b_len= my_charpos(field_charset, b_ptr, b_ptr + field_length, char_len);
+  }
+  else
+    a_len= b_len= field_length;
+  return my_strnncoll(field_charset,(const uchar*) a_ptr, a_len,
+                                    (const uchar*) b_ptr, b_len);
 }
 
+
 void Field_string::sort_string(char *to,uint length)
 {
   uint tmp=my_strnxfrm(field_charset,
@@ -5958,8 +5969,14 @@ Field *make_field(char *ptr, uint32 field_length,
   if (f_is_alpha(pack_flag))
   {
     if (!f_is_packed(pack_flag))
-      return new Field_string(ptr,field_length,null_pos,null_bit,
-			      unireg_check, field_name, table, field_charset);
+    {
+      if (field_type == FIELD_TYPE_STRING ||
+          field_type == FIELD_TYPE_VAR_STRING)
+        return new Field_string(ptr,field_length,null_pos,null_bit,
+                                unireg_check, field_name, table,
+                                field_charset);
+      return 0;                                 // Error
+    }
 
     uint pack_length=calc_pack_length((enum_field_types)
 				      f_packtype(pack_flag),