[cvs-nhc98] patch applied (yhc): Fix a few bugs in collectFreeVars, the \\ operator only removes one occurrence, now nub is done on the lhs of the \\ to make sure all variables are removed

Wed Aug 8 07:41:06 PDT 2007 Neil Mitchell * Fix a few bugs in collectFreeVars, the \\ operator only removes one occurrence, now nub is done on the lhs of the \\ to make sure all variables are removed M ./src/libraries/core/Yhc/Core/FreeVar3.hs -6 +7