Set CURL handle verbose state as early as practical,
rather than when the handle is added to the socket manager.
Add v. adv option for if user is asked to review new account settings,
before the account is authenticated, instead of always asking.
This defaults to off. Most users won't need to review these settings
or really understand what they're being asked.
Windows: embed cacerts.pem into executable and extract at run time.
This avoids the user needing to place cacerts.pem in the right place.
This also avoids unexplained failure if the cacerts.pem is missing.
If a cacerts.pem is already present in the cwd, use that instead.