Version without Rhino (js.jar) bundled

[gslowikowski]

Create library version containing only jcoffeescript classes, without Rhino classes. Sometimes this is necessary to avoid multiple Rhino versions in the classpath (we use YUICompressor, and it has it's own, modified version or Rhino bundled).

The alternative way is to change Rhino classes package name, like in Google's closure-compiler: http://closure-compiler.googlecode.com/svn/trunk/build.xml - "rhino-jarjar" target.