connection timeouts for iRODSSession have a maximum practical value

[d-w-moore]

Beyond a value of 9223372036.854775 seconds - around 290 years - large connection timeouts tend to blow up on actual use.

This is actually more of a Python library or OS-related issue, but it behooves us to handle it in PRC as well. So I propose we hard-limit it at the maximum value and log a warning that this action was taken.

See also the source issue for this one.

[trel]

it's such a long time... let's just pick an int that is 290 years (or less)... and be done with it. that's not a reasonable value for a session anyway, so we're just protecting users of the library.

[alanking]

@d-w-moore - Please close if complete. Thanks