Inappropriate recurring help text

The recurring help text is inaccurate in 2 ways

1) Your recurring contribution will be processed automatically.

This is probably true but not guaranteed with some later processor variants

2) You will receive an email receipt for each recurring contribution.

This can be altered!

I am mostly concerned about allowing an override at the moment. There are 2 methods I can think of

1) add a region to the tpl
2) assign the text as a var from php (permitting hooks to see it).

I'm leaning towards the latter as it seems cleaner for more complex determinations