ENH: Update CTK to remove extra debug statements related to ctkDICOMDatabase

Before this commit:

// -------
$ ./Slicer
Number of registered modules: 142
Register compression libraries
TagCacheDatabase not open

TagCacheDatabase verified!

Number of instantiated modules: 142
Number of loaded modules: 142
// -------

After:

// -------
$ ./Slicer
Number of registered modules: 142
Number of instantiated modules: 142
Number of loaded modules: 142
// -------

Summary of changes:

$ git shortlog 9e1c0258..62675d0 --no-merges
Jean-Christophe Fillion-Robin (2):
Remove qDebug statement from registerCompressionLibraries()
Do not display debug info when tagCacheExists method works as expected.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23558 3bd1e089-480b-0410-8dfb-8563597acbee