[project @ 2005-03-01 05:49:43 by simonpj]

[project @ 2005-03-01 05:49:43 by simonpj]
Make desugaring of pattern-matching much more civilised.

Before this change we wrapped new bindings around the
right hand side; but that meant they ended up wrapped
in reverse order.  Now we accumulate the bindings
separately, in the eqn_wrap field of an EqnInfo.

This cures a desugaring bug encountered by Akos Korosmezey
immortalised as ds055