FELIX-4491, FELIX-4718, FELIX-4719:

- (large patch due to unexpected downtime of SVN);
- added support for non-processed resources in deployment packages, which
  makes the Felix DP a little more compliant to the OSGi specification. This
  should fix FELIX-4491 (and FELIX-4516 as well?);
- reviewed and fixed the snapshot creation/restore functionality used for
  the data area of bundles that are upgraded. Both pieces of functionality
  were broken and in desparate need of fixing. Added several tests to cover
  this functionality.



git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1643202 13f79535-47bb-0310-9956-ffa450edef68