don't wrap links when wrapping text / url-view hook

[mmehnert]

Some terminals on X11 allow to right-click a link to open it in a browser if this link has not been cut in half by being wrapped by the displaying application. An alternative would be a view-url hook like it was discussed on the sup-talk list in Feb 2008. (http://article.gmane.org/gmane.mail.sup.general/650/)

A similar thing can be achieved by piping the message to urlview - but having a single shortcut like "L" to open a link would be much more convenient.