[CMake] FindDCMTK.cmake bug, asking for a bump.

[Kent Williams]

I logged this bug earlier this year: http://www.cmake.org/Bug/view.php?id=12916

The problem is that the FindDCMTK.cmake file leaves out a required
library from DCMTK_LIBRARIES.

I included a one line patch to fix the problem.

According to the comment in the bug from David Cole, this is where I
come to appeal for a CMake developer to adopt this bug and fix it.

So, please, pretty please?