Directory Structure [step 1]: moving files

working on #672

NOTE: This commit can't be compiled!!

src/tools/CMakeLists.txt

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+# Copyright (C) 
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+add_subdirectory(map_extractor)
+add_subdirectory(vmap4_assembler)
+add_subdirectory(vmap4_extractor)
+add_subdirectory(mmaps_generator)
+if (WITH_MESHEXTRACTOR)
+  add_subdirectory(mesh_extractor)
+endif()