The launcher is now configured using relatively to a Target instead of the
location of a generated executable. TARGET parameter should be specified
instead of APPLICATION_PATH

Also move the call to the macro at in the CMakeLists where the associated
target is defined.

Related changes:
 - Launcher properly configured on windows by using custom_target
and ensuring the intermediate build directory is properly passed
 - Remove suffix ADDITIONAL_ from macro signature
 - Argument given on the command line are now properly passed to the target application

git-svn-id: http://svn.slicer.org/Slicer4/trunk@15463 3bd1e089-480b-0410-8dfb-8563597acbee