At the moment the project treeview simplify the display of the project hierarchy.

Eg.

group vbf is shown like this:

root node 'Files' --> vbf ----> source "file1.vala" ----> source "file2.vala" ----> source etc etc... --> vbf (again) ----> source "vbftest.vala"

instead the vbf library mantains the correct relation:

root node 'Files' --> vbf ---> target "libvbf" ----> source "file1.vala" ----> source "file2.vala" ----> source etc etc... ---> target "vbftest" ----> source "vbftest.vala"

This issue was closed by revision r347.