updated manifest based on refactor of data

git-svn-id: http://dev.eclipse.org/svnroot/technology/org.eclipse.stem/trunk/data@3592 92a21009-5b66-0410-b83a-dc787c41c6e9
tree: e0b3911556329d38eb3f87492c9e6b5bfb110cc2
  1. geography/
  2. org.eclipse.stem.internal.data/
  3. population/