[Cbc] More restart problems (I think)

[John Forrest]

David,

It looks as if setBestSolution passes in a solution of 383452.46. But it 
also seems that this value was not used in preprocessing.  In search (at 
100 nodes) the code sees that using reduced cost fixing etc it can 
reduce problem size from 3183 rows and 8109 columns to 2681 rows and 
5030 columns.  It restarts search using this smaller problem and passes 
across solution.  Later on it finds 335722.71 and returns that.

I see no problem with double search.  It may be possible that 
setBestSolution is somehow not passing the value to preprocessing. Do 
you get the same result if you add  "-cutoff" "383452.46" to argv2?

John