Vertical tab text not properly rotated

```
Descriptive text on vertical tabs (e.g. on the left side of the gui) is not 
correctly rotated in some cases.

Seems to work on windows and linux, but not on MacOS (See screenshots on 
Softpedia http://mac.softpedia.com/get/Games/7th-Sense.shtml).
```

Original issue reported on code.google.com by `RedFireD...@gmail.com` on 21 Jan 2012 at 1:28
