title: scala.reflect.internal.MissingRequirementError when building a project against Scala 2.10 RC1
body: <p>I am attempting to build our old projects against Scala 2.10.0 RC1. Here's the error I get when I do it:</p>
  
  <pre><code>rahul@acb70333:~/Projects/Vayana/gryphon-camel-scala&gt; gradle build
  :compileJava UP-TO-DATE
  :compileScala
  [ant:scalac] scala.reflect.internal.MissingRequirementError: object scala.beans.BeanInfo in compiler mirror not found.
  [ant:scalac]    at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:16)
  ...
  [ant:scalac]    at org.gradle.launcher.GradleMain.main(GradleMain.java:26)
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':compileScala'.
  &gt; Compile failed because of an internal compiler error (object scala.beans.BeanInfo in compiler mirror not found.); see the error output for details.
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  
  BUILD FAILED
  
  Total time: 24.7 secs
  </code></pre>
  
  <p>Full stack trace here: <a href="https://www.refheap.com/paste/6228" rel="nofollow">https://www.refheap.com/paste/6228</a>.</p>
  
  <p>What does this error message mean? Am I missing some libraries on classpath?</p>