message: cmake: Don't modify arguments.
diff: @@ -34,6 +34,7 @@ class CMakeBuilder(drake.Builder):
  'CMAKE_RC_COMPILER': self.toolkit.cxx[0:-3] + 'windres',
  'CMAKE_SYSTEM_NAME': 'Windows',
  })
  + dsts = list(dsts)
  dsts.append(self.__cmake_cache)
  # Call __init__ last, make __cmake_cache is declared a dsts, so
  # that it has a build-tree path, not a source-tree one.
  