[HACKERS] tinterval - operator problems on AIX

[Zeugswetter Andreas SB]

On AIX timestamp and horology regression fails in current, because 
timestamp - interval for result timestamps that are before 1970 (epoch ?) 
are off by one hour. I think this is not an issue for an adapted expected file, 
but a new (in 7.1beta) bug. But I am at no means an expert at what the result 
should be when substracting 34 years from epoch or 'Mon Dec 30 17:32:01 1996 PST'.

Andreas

regression.diffs