Let psql process files with > 4,294,967,295 lines

Folks,

I just ran across an issue where in psql, people can get the line
number in the file so long as it is under 2^32-1 lines long, but once
it gets larger than that, it's hosed.

This patch changes the data type from unsigned int to unsigned long
long, which is probably not the correct thing in order to get 64-bit
arithmetic, but I figure it's good enough to get a discussion started.

Cheers,
D
--
David Fetter <david@fetter.org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666
                              Skype: davidfetter

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