Some additional info on this problem. I just downloaded Eclipse 3.1.2 and
I get the same behavior.
Also, I tried performing the following steps:
1) Select the the "Run" option
2) Go to the "Classpath" tab for my Junit test
3) Highlight "User Entries"
4) Click "Add Projects"
5) Select the base project
6) Check the "Add exported entries of selected projects"
7) Click OK
When I perform these tasks, then the appropriate folders are added, i.e.
ONLY the folders flagged for export, not the "private" folders.
Why would the default build path not use the same logic?