mozilla/rust — pull request #5189 by nikomatsakis (2013-03-02 01:02:17+00:00)
Title: Avoid calling to_vec() unnecessarily in parser.

Also, rename the OptVec-to-vector conversion method to
opt_vec::take_vec() and convert from a method into a fn
because I fear strange bugs.

This makes the deep-vector test cases parse much faster.