pseudoselectors aren't minified correctly

[knupfer]

yui 2.4.8 makes the following, which is clearly wrong

:first-child :last-child{background-color:red}
--->
:first-child:last-child{background-color:red}

This would affect elements which are the first and the last child, instead of affecting every children which is a last child of all children which are a first child.

[melloware]

Fixed in my fork: primefaces-extensions/resources-optimizer-maven-plugin#77