bbcode formatter

If anyone is feeling really adventurous, here's some code that we could 
include in the archive msg rendering:

http://fisheye.jboss.com/browse/Portal/tags/JBoss_Portal_2_6_0_SNAPSHOT1/format/src/main/org/jboss/portal/format/render/bbcodehtml/ToHTMLRenderer.java?r=5454

Jeff