- Avoid the error message "Can't read index header from..."

when copying a small index file because the value returned
   for $length is < 1024. This can happen if the filehandle
   was open()ed as an UTF-8 encoded file with Unicode characters
   (In this case read() returns characters not bytes)
   (Thanks to Mike Bethune) for this hint)

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;