added support for scalac_excludes to main in addition to test

git-svn-id: http://scalatest.googlecode.com/svn/trunk@5101 fd1274fd-080f-5963-8033-43ee40fcd1de
Got rid of hard-coded Equality typeclasses in Matchers.


git-svn-id: http://scalatest.googlecode.com/svn/trunk@5103 fd1274fd-080f-5963-8033-43ee40fcd1de
Checking in Chee Seng's branch in which he added a lot tests for equality in contain matchers, including
fixes for two discovered bugs.

Cmd I used:

svn merge -r5098:HEAD https://scalatest.googlecode.com/svn/branches/cs-contain-matcher-13


git-svn-id: http://scalatest.googlecode.com/svn/trunk@5104 fd1274fd-080f-5963-8033-43ee40fcd1de