small bug on 3-digit years in 9.2-dev

Hi,

While working on the "What's new in 9.2", I think I found a small bug:

SELECT to_date('519-07-02','YYY-MM-DD');
to_date
------------
0519-07-02
(1 row)

It comes, I think, from the year 519 case not being handled in the following
code. Patch attached

+ if (year < 70)
+ return year + 2000;
+ /* Force 70-99 into the 1900's */
+ else if (year >= 70 && year < 100)
+ return year + 1900;
+ /* Force 100-519 into the 2000's */
+ else if (year >= 100 && year < 519)
+ return year + 2000;
+ /* Force 520-999 into the 1000's */
+ else if (year >= 520 && year < 1000)
+ return year + 1000;
+ else
+ return year;

Regards