The format caused a nesting and list with the extra quotes
that resulted in a parsing error where an extraneous ';'

-- verifying file...
     file='Slicer-git-itkv4/CTKAPPLAUNCHER-prefix/src/CTKAppLauncher-0.1.7-macosx-amd64.tar.gz'
-- verifying file... warning: did not verify file - no URL_MD5 checksum argument? corrupt file?
-- extracting...
     src='Slicer-git-itkv4/CTKAPPLAUNCHER-prefix/src/CTKAppLauncher-0.1.7-macosx-amd64.tar.gz'
     dst='Slicer-git-itkv4/CTKAPPLAUNCHER;'
-- extracting... [tar xfz]
CMake Error at CTKAPPLAUNCHER-prefix/src/CTKAPPLAUNCHER-stamp/extract-CTKAPPLAUNCHER.cmake:26 (execute_process):
  execute_process given unknown argument /../ex-CTKAPPLAUNCHER1239.

make[2]: *** [CTKAPPLAUNCHER-prefix/src/CTKAPPLAUNCHER-stamp/CTKAPPLAUNCHER-download] Error 1
make[1]: *** [CMakeFiles/CTKAPPLAUNCHER.dir/all] Error 2
make: *** [all] Error 2

git-svn-id: http://svn.slicer.org/Slicer4/trunk@20834 3bd1e089-480b-0410-8dfb-8563597acbee