sbt/sbt — pull request #1525 by jsuereth (2014-08-12 16:38:55+00:00)
Title: Fix Eval issues

Fixes both:

* Hash conflicts when build.sbt files are too similar, leading to incomprehensible error messages
* Littering the `project/target/config-classes` directory with tons of unnecessary junk.

Review by @eed3si9n