[www-scripts] Clang Attribute Doc Update: ERROR

[root via www-scripts]

UPDATING LLVM SOURCES
HEAD is now at a5e0194 Revert "Rename InlineFeatureAnalysis to FunctionPropertiesAnalysis"
>From https://github.com/llvm/llvm-project
 * branch            master     -> FETCH_HEAD
   a5e0194..e59778a  master     -> origin/master
First, rewinding head to replay your work on top of it...
Fast-forwarded master to e59778a66a91225c3f9c7b46e3e86e50994dbe14.
CMake Error at CMakeLists.txt:6 (message):
  Your CMake version is 3.7.1.  The minimum version of CMake required to
  build LLVM is now 3.13.4.


-- Configuring incomplete, errors occurred!