Checking in Chee Seng's branch in which he added support for Java collections
to contain matchers.

Cmd I used:

svn merge -r4909:HEAD https://scalatest.googlecode.com/svn/branches/cs-contain-matcher-4



git-svn-id: http://scalatest.googlecode.com/svn/trunk@4925 fd1274fd-080f-5963-8033-43ee40fcd1de