COMP: Include DCMTK shared libraries in packages

Now that DCMTK is built as shared rather than static, the
dlls need to be copied into the install tree for packaging.

See also commit 21914 and bug #3040.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@21944 3bd1e089-480b-0410-8dfb-8563597acbee