Start libc++ python cleanup and consolidation.

Libc++ frequently creates and uses utilities written in python.
Currently there are python modules under both libcxx/test and
libcxx/util. My goal with these changes is to consolidate them
into a single package under libcxx/utils/libcxx.

llvm-svn: 294644
diff --git a/libcxx/lib/CMakeLists.txt b/libcxx/lib/CMakeLists.txt
index 231ccda..c6a94e3 100644
--- a/libcxx/lib/CMakeLists.txt
+++ b/libcxx/lib/CMakeLists.txt
@@ -332,7 +332,7 @@
   # after cxx builds.
   add_custom_command(TARGET cxx_shared POST_BUILD
     COMMAND
-      ${PYTHON_EXECUTABLE} ${LIBCXX_SOURCE_DIR}/utils/gen_link_script/gen_link_script.py
+      ${PYTHON_EXECUTABLE} ${LIBCXX_SOURCE_DIR}/utils/gen_link_script.py
     ARGS
       "$<TARGET_LINKER_FILE:cxx_shared>"
       ${LIBCXX_INTERFACE_LIBRARY_NAMES}