First pass at adding percent quota limits for Amazon SES
This, I think, finishes up the Amazon SES, "only use this percentage of your quota" feature, as well as adds support to enable both Global Unsubscribe and Global Blacklist via the Installer.
closes #434
This makes sure the correct config directly is used. "auto" doesn't cut it.
working on the change log.
Some rules to deal with DMARC headaches. Gag!
more change doc'd
pp mode is now the default for discussion lists. Sigh.
Changes doc'd
TODO
VER CHANGE!
Added to the change log
VER CHANGE!
little spelling mistake, there.
Removing the Switch.pm prereq (belch)
Optimizations to the mass mailing stuff, especially for Amazon SES. 

Of prime importance, is that I took a flock() call out, as we're already locking the file, which may lead to a stale lock, or a race condition - not sure! The file is, "protected" already with a semaphore file - so there's no reason to try to flock it directly.
closes #436
This makes invite-only lists work correctly, when you try adding email addresses via the admin. Duh.
This makes switching lists when on the Subscriber Add verification screen a little less painful.
Closes #437  Profile Field Information not saved when user Requests a Subscription