message: Do not clean src and gen directories when java is disabled
diff: @@ -8,6 +8,9 @@ if(APPLE_FRAMEWORK OR WINRT OR NOT PYTHON_DEFAULT_AVAILABLE OR NOT ANT_EXECUTABL
  ocv_module_disable(java)
  endif()
  +set(the_description "The java bindings")
  +ocv_add_module(java BINDINGS opencv_core opencv_imgproc)
  +
  if(EXISTS ${CMAKE_BINARY_DIR}/src)
  execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory "${CMAKE_BINARY_DIR}/src")
  endif()
  @@ -15,8 +18,6 @@ if(EXISTS ${CMAKE_BINARY_DIR}/gen)
  execute_process(COMMAND ${CMAKE_COMMAND} -E remove_directory "${CMAKE_BINARY_DIR}/gen")
  endif()
  -set(the_description "The java bindings")
  -ocv_add_module(java BINDINGS opencv_core opencv_imgproc)
  ocv_module_include_directories("${CMAKE_CURRENT_SOURCE_DIR}/generator/src/cpp")
  ocv_module_include_directories("${OpenCV_SOURCE_DIR}/include")
  