[cvs-nhc98] patch applied (yhc): Add a note that FreeVar3 gives the property of only returning each variable once

[Neil Mitchell]

Sat Nov 24 03:44:14 PST 2007  Neil Mitchell
  * Add a note that FreeVar3 gives the property of only returning each variable once

    M ./src/libraries/core/Yhc/Core/FreeVar3.hs -1 +1