Wrong encoding for cells with formatting

```
Reproducing:
Need file with cells formated with using of non ISO-8859-1 characters (as
example: cyrillic characters )

Outputing of this cells don't decoding.

My hack:
String 835, function _format_value($format,$num,$f) {
//Fix for format encoding
if (mb_detect_encoding($format) == 'UTF-8') $format =
mb_convert_encoding($format, 'UTF-8', 'UTF-16LE');

```

Original issue reported on code.google.com by `shemyako...@gmail.com` on 26 Oct 2010 at 2:16

Start at String 835 and the _format_value($format,$num,$f) function mentioned in the report. Reproduce the problem with formatted cells containing Cyrillic or other non-ISO-8859-1 characters, then verify that the cell output is decoded correctly without the reported hack.

Written by the indexing model from the issue text.