[Webtest] another install question

[Lisa Crispin]

Howdy,
When I installed build 1393 (by downloading build.zip), I notice that I do not have 'runtime' and 'plugin' directories in the lib directory, as I do in the directory where I extracted build 1159.  It doesn't seem to affect my tests, but where did these come from before, and where are they now, and do I need them?  I have these directories in my classpath.  It looks like maybe the jar files in these directories are now under the lib directory itself?  
thanks
Lisa