mozilla/rust — pull request #9630 by blake2-ppc (2013-09-30 17:36:01+00:00)
Title: Remove a few uses of @-pointers for @ast::Expr and @mut Block in trans

This is mostly an incremental change, picking off some uses of
@- or @mut-pointers that can be replaced by references.

Almost all of the builder functions in trans::build are updated,
mostly using `&Block` arguments instead of `@mut Block`.