How to check out the WTP plugins

It is recommended to check out the plugins via the releng tools using map files provided by the project.
The main advantage of this approach is to have a reproducable build, and that way you can easily check out exactly the code that is contained in builds produced by the web tools project (I-Builds, M-Builds, Releases).
This approach makes general handling easier and is as well more helpful for the project when submitting bugreports or supplying pachtes. Checking out HEAD is not recommended as it is not reproducable.