[PATCH] round 2: add unconditional support for @encode data for block introspection

Same details as before, except I pulled David's original code. It ain't there anymore :slight_smile:

Here's the revised patch (still figuring out the test harness)

clang-2.patch (9.45 KB)

Looks good. Check it in when you can (seems llvm server is down).
Still need a test case for it.

- Fariborz