make indentation match other files

(Actually by Matthew, but setting Claire as the author so
that it will be easier to see via `git blame` in the future
if I mangle Claire's code.)
add `static` annotations on local functions
make assignment-before-initialization an error

Recent changes made use-before-initialization an error for
`letrec` bindings, `class` fields, and `unit` definitions.
Now, assignment-before-initialization is also an error.
add Claire to acks
racket/draw Cocoa: fix (again!) surroate-pair patch for Pango
add 'undefined-error-name property for `letrec` bindings