[Patch, v7] DR 431 for sso/rc-strings

[Benjamin Kosnik]

Hey dude.

A couple of random questions.

1) Do you have any design docs or introductory material about the new string designs?
At this point, there is a bunch of work. It would be nice to start collecting docs, or at least background links.

2) Do you think any of the existing performance tests for string will
be useful for the new designs? Or are you thinking of augmenting the current tests?

Just curious.

-benjamin