While at it, fix the usage of <year> in <copyright> to let the
stylesheet do the collation when having several years.
<releaseinfo>for Clutter &version;</releaseinfo>
<copyright>
- <year>2006,2007,2008</year>
+ <year>2006</year>
+ <year>2007</year>
+ <year>2008</year>
<holder>OpenedHand LTD</holder>
</copyright>
<copyright>
- <year>2009, 2010</year>
+ <year>2009</year>
+ <year>2010</year>
<holder>Intel Corporation</holder>
</copyright>
<copyright>
<year>2009</year>
+ <year>2010</year>
<holder>Intel Corporation</holder>
</copyright>