Move some old observer code into package ivm.rfp
Update Eclipse project files
Reactivate more code
Add more IVM update messages (attempt?)
Remove file
SBTEclipse regenerated settings for Scala-IDE
Split code in different subprojects

* Various options must be changed to apply to all subprojects.
* TransformTestHelper is reused in other tests, special care is needed to make
  test utilities like this available for other tests.
* Adapt doCtags for new paths.
Split TransformTestHelper in a separate file
Add bytecode sample for testing analyses
Revert "Switch to latest SBT"

This reverts commit 38940b9b7b4f54e097cc18d1114de8af29986221, because SBT
0.12.1/2 break code generation.