Update prebuilt Clang to r365631c1 from Android.

The version we had was segfaulting.

Bug: 132420445
Change-Id: Icb45a6fe0b4e2166f7895e669df1157cec9fb4e0
diff --git a/linux-x64/clang/lib64/cmake/llvm/HandleLLVMStdlib.cmake b/linux-x64/clang/lib64/cmake/llvm/HandleLLVMStdlib.cmake
index a0706d8..f0e22d1 100644
--- a/linux-x64/clang/lib64/cmake/llvm/HandleLLVMStdlib.cmake
+++ b/linux-x64/clang/lib64/cmake/llvm/HandleLLVMStdlib.cmake
@@ -14,6 +14,7 @@
 
   include(CheckCXXCompilerFlag)
   include(CheckLinkerFlag)
+  set(LLVM_LIBCXX_USED 0)
   if(LLVM_ENABLE_LIBCXX)
     if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
       check_cxx_compiler_flag("-stdlib=libc++" CXX_COMPILER_SUPPORTS_STDLIB)
@@ -22,6 +23,7 @@
         append("-stdlib=libc++"
           CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS
           CMAKE_MODULE_LINKER_FLAGS)
+        set(LLVM_LIBCXX_USED 1)
       else()
         message(WARNING "Can't specify libc++ with '-stdlib='")
       endif()