- make packageinfo needs to see the all the Makefiles
- however, usually it does need to be called only once for a build
- thus, doing the generation of the packageinfo files in recursion (with
  parseing the full Makefiles) and full generated dependencies,
  therefore allowing the install targets to do their work without
  parsing all the Makefiles and hence quicker

Change-Id: I477a528dcdfc3fbf5d7147bf328672ab13ece8da