Fix setting timestamp values with very early year values, like 2, by formatting all years with four digits.  Previously 0002-10-30 was being sent as 2-10-30 which got turned into 2030-02-10.
Fix setting timestamp values with very early year values, like 2, by
formatting all years with four digits.  Previously 0002-10-30 was
being sent as 2-10-30 which got turned into 2030-02-10.

Per report from oneway_111.

tivv/davepgjdbc,tivv/davepgjdbc