Bidirectional implementation finished, more complex tests for bidirectional, cleanup...

Bidirectional implementation finished, more complex tests for bidirectional, cleanup fix, todos done:

- fixed cleanup to not cause errors and uncommented it again
- added new tests for AND, linked roles and fw/bw
- fixed an older bug to make test ..own_and2.sh work
- replaced bidirectional matching of bw with unresolved_attribute.. (because it contains all the subject attributes/roles)
- introduced extra function for bidirectional match handling (is the same for bw and fw and pretty long)
- commandline: if not specified to use bw or fw search -> assume it's bidirectional
- moved the bidirecitonal matching list to vrh and removed it from being global
- valgrind on service (one error remaining, to be solved in future commits)
- use the vrh->dsq_head/tail for the cleanup stuff