Use the Commontk/DCTMK dropNetwork branch

For the Commontk/CTK dropNetwork branch, use the corresponding
branch of DCMTK.

Note that we will eventually want to switch to the newer dcmtk that
avoids the need for dropNetwork, but this will be a bigger project
to be done later.

CMakeExternals/DCMTK.cmake

@@ -26,7 +26,8 @@ IF(${add_project})
       BINARY_DIR ${proj}-build
       PREFIX ${proj}${ep_suffix}
       GIT_REPOSITORY "${git_protocol}://github.com/commontk/DCMTK.git"
-      GIT_TAG "origin/patched"
+      #GIT_TAG "origin/patched"
+      GIT_TAG "origin/dropNetwork"
       CMAKE_GENERATOR ${gen}
       BUILD_COMMAND ""
       CMAKE_ARGS