Re: Using 128-bit integers for sum, avg and statistics aggregates

Hi,

Here is version 2 of the patch which detects the presence of gcc/clang
style 128-bit integers and has been cleaned up to a reviewable state. I
have not added support for any other compilers since I found no
documentation 128-bit support with icc or MSVC. I do not have access to
any Windows machines either.

A couple of things I was not sure about was the naming of the new
functions and if I should ifdef the size of the aggregate state in the
catalog or not.

--
Andreas Karlsson