PRD-5166 - Remove all ivy fixes - they dont work on the Pentaho CI server.

Thus Pentaho snapshot builds will be invalid for maven users and OEMs must
 use their own local CI to produce SNAPSHOT dependencies for themselves
 if they use Maven at some point in their process.
PRD-5166 - Update readme to explain how to use the proper build process.
Merge pull request #442 from tmorgner/master

PRD-5166 - Remove all ivy fixes - they dont work on the Pentaho CI