Improve LEASHAUTOINIT description

Improve LEASHAUTOINIT description

This installer option determines whether the -autoinit argument
is passed to the MIT Kerberos executable.
On startup, if this argument is passed, and if there are no tickets
in the default cache, and if no useful tickets can be imported from
the LSA cache, MIT Kerberos will open the get ticket dialog and prompt
for a password; this option does not appear to have any other effect.

(cherry picked from commit d9af383d069b571457849dea77dbef01ccb55370)

ticket: 7357
status: resolved