Fix for projection of type class constructors in signatures.
Fix for projection of type class constructors in signatures.

urweb/debian-urweb,urweb/debian-urweb,urweb/debian-urweb,thinkpad20/urweb,thinkpad20/urweb,urweb/debian-urweb,urweb/debian-urweb,thinkpad20/urweb