[1.6.1] Implement BoolToCSS attribute transformations for td,th.nowrap and hr.noshade

- Implement CSS property white-space:nowrap;
- Update TODO with more ambitious goal: all transforms by 1.6.1

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1012 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/CSSDefinition.php

@@ -206,6 +206,9 @@ class HTMLPurifier_CSSDefinition
             new HTMLPurifier_AttrDef_CSS_Percentage()
         ));
         
+        // partial support
+        $this->info['white-space'] = new HTMLPurifier_AttrDef_Enum(array('nowrap'));
+        
     }
     
 }