In CTest script, Disable CTEST_USE_LAUNCHERS for non Make generator

Doing so will allow build error to be properly reported for generator
that do not support CTest launcher

See #242

CMake/ctkDashboardDriverScript.cmake

@@ -98,6 +98,9 @@ endif()
 
 # For more details, see http://www.kitware.com/blog/home/post/11
 set(CTEST_USE_LAUNCHERS 1)
+if(NOT "${CTEST_CMAKE_GENERATOR}" MATCHES "Make")
+  set(CTEST_USE_LAUNCHERS 0)
+endif()
 set(ENV{CTEST_USE_LAUNCHERS_DEFAULT} ${CTEST_USE_LAUNCHERS})
 
 if(empty_binary_directory)