Folks,

We have to decide on how to resolve a coding issue in Exim, and there
are two fixes available.  One fix adds a bunch of complexity.  The other
fix just starts using 64-bit integers.  I _think_, that as we approach
2014, we can now rely upon 64-bit integers being available, but we don't
want to leave a platform behind if it's still in use with Exim.

At present, there are two uses of 64-bit integers in Exim:

 (1) In the DKIM code, which can be disabled;
 (2) Encapsulated behind int_eximarith_t which can be redefined on a
     per-platform basis.

We do not ship with any redefinitions of int_eximarith_t, but someone
might be doing so in local packaging.

If our moving to rely upon 64-bit integers in the core of Exim would
cause problems for your being able to use Exim, please speak up and let
us know.

Thanks,
-Phil

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