Do not use zlib in DCMTK until DCMTK_LIBRARIES is fixed.
Do not use zlib in DCMTK until DCMTK_LIBRARIES is fixed.

Closes #25

naucoin/CTK,mehrtash/CTK,msmolens/CTK,151706061/CTK,vovythevov/CTK,danielknorr/CTK,naucoin/CTK,vovythevov/CTK,pieper/CTK,ddao/CTK,msmolens/CTK,jcfr/CTK,AndreasFetzer/CTK,finetjul/CTK,lassoan/CTK,commontk/CTK,jcfr/CTK,laurennlam/CTK,jcfr/CTK,Heather/CTK,SINTEFMedtek/CTK,vovythevov/CTK,SINTEFMedtek/CTK,Sardge/CTK,finetjul/CTK,ddao/CTK,AndreasFetzer/CTK,espakm/CTK,lassoan/CTK,pieper/CTK,fedorov/CTK,jcfr/CTK,finetjul/CTK,151706061/CTK,mehrtash/CTK,msmolens/CTK,CJGoch/CTK,msmolens/CTK,CJGoch/CTK,Sardge/CTK,Heather/CTK,pieper/CTK,lassoan/CTK,ddao/CTK,CJGoch/CTK,ddao/CTK,fedorov/CTK,AndreasFetzer/CTK,naucoin/CTK,sankhesh/CTK,151706061/CTK,rkhlebnikov/CTK,SINTEFMedtek/CTK,sankhesh/CTK,finetjul/CTK,lassoan/CTK,rkhlebnikov/CTK,Sardge/CTK,commontk/CTK,espakm/CTK,naucoin/CTK,espakm/CTK,Sardge/CTK,SINTEFMedtek/CTK,rkhlebnikov/CTK,sankhesh/CTK,espakm/CTK,commontk/CTK,fedorov/CTK,laurennlam/CTK,mehrtash/CTK,CJGoch/CTK,Heather/CTK,danielknorr/CTK,danielknorr/CTK,mehrtash/CTK,laurennlam/CTK,danielknorr/CTK,CJGoch/CTK,laurennlam/CTK,vovythevov/CTK,commontk/CTK,Heather/CTK,rkhlebnikov/CTK,jcfr/CTK,151706061/CTK,151706061/CTK,fedorov/CTK,pieper/CTK,sankhesh/CTK,SINTEFMedtek/CTK,AndreasFetzer/CTK