[Libvirt-cim] [PATCH 0 of 4] #5 - Enable VSSD to validate client given object path and Adopt changed to VSSD interface to ESD & SDS & VSSDC

VSSD does now take care of the client given object path. The resulting interface changes have been adopted to - ESD by the second patch - SDS by the third patch - VSSDC by the fourth patch (diff to patch set 1) diff to patch set 2: - updated VSSD to compare a returned integer result explicitely diff to patch set 3: - fixed memory leak (on name) in get_vssd_by_ref - fixed get_vssd_by_name and get_vssd_by_ref to only return a valid instance pointer in case of success diff to patch set 4: - fix whitespace issues