[cvs-nhc98] patch applied (hat): Fix two small bugs in hat-observe. Positional constructor patterns that

Mon May 22 08:28:25 PDT 2006 malcolm * Fix two small bugs in hat-observe. Positional constructor patterns that match named-field expressions in the trace came up with both false positives and false negatives. However, this fix is still not entirely satisfactory, since (a) it only allows matching if the positional pattern is in the same order as the named field update expression; and (b) there is still no way to specify a named-field pattern. M ./src/hattools/Pattern.hs -1 +4