Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-subs-4.1

scripts/mysqlhotcopy.sh

@@ -635,6 +635,7 @@ sub copy_index
     my $to="$target/$file";
     my $buff;
     open(INPUT, "<$from") || die "Can't open file $from: $!\n";
+    binmode(INPUT, ":raw");
     my $length=read INPUT, $buff, 2048;
     die "Can't read index header from $from\n" if ($length < 1024);
     close INPUT;

sql/item_strfunc.h

@@ -362,6 +362,7 @@ public:
   void fix_length_and_dec()
   {
     max_length= MAX_FIELD_NAME * system_charset_info->mbmaxlen;
+    maybe_null=1;
   }
   const char *func_name() const { return "database"; }
 };