Update prebuilt Clang to r365631c1 from Android.

The version we had was segfaulting.

Bug: 132420445
Change-Id: Icb45a6fe0b4e2166f7895e669df1157cec9fb4e0
diff --git a/linux-x64/clang/include/llvm/Config/abi-breaking.h b/linux-x64/clang/include/llvm/Config/abi-breaking.h
index 3338004..fd32bf3 100644
--- a/linux-x64/clang/include/llvm/Config/abi-breaking.h
+++ b/linux-x64/clang/include/llvm/Config/abi-breaking.h
@@ -34,15 +34,27 @@
 #elif defined(_WIN32) || defined(__CYGWIN__) // Win32 w/o #pragma detect_mismatch
 // FIXME: Implement checks without weak.
 #elif defined(__cplusplus)
+#if !(defined(_AIX) && defined(__GNUC__) && !defined(__clang__))
+#define LLVM_HIDDEN_VISIBILITY __attribute__ ((visibility("hidden")))
+#else
+// GCC on AIX does not support visibility attributes. Symbols are not
+// exported by default on AIX.
+#define LLVM_HIDDEN_VISIBILITY
+#endif
 namespace llvm {
 #if LLVM_ENABLE_ABI_BREAKING_CHECKS
 extern int EnableABIBreakingChecks;
-__attribute__((weak, visibility ("hidden"))) int *VerifyEnableABIBreakingChecks = &EnableABIBreakingChecks;
+LLVM_HIDDEN_VISIBILITY
+__attribute__((weak)) int *VerifyEnableABIBreakingChecks =
+    &EnableABIBreakingChecks;
 #else
 extern int DisableABIBreakingChecks;
-__attribute__((weak, visibility ("hidden"))) int *VerifyDisableABIBreakingChecks = &DisableABIBreakingChecks;
+LLVM_HIDDEN_VISIBILITY
+__attribute__((weak)) int *VerifyDisableABIBreakingChecks =
+    &DisableABIBreakingChecks;
 #endif
 }
+#undef LLVM_HIDDEN_VISIBILITY
 #endif // _MSC_VER
 
 #endif // LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING
diff --git a/linux-x64/clang/include/llvm/Config/llvm-config.h b/linux-x64/clang/include/llvm/Config/llvm-config.h
index 483d60c..55f10fc 100644
--- a/linux-x64/clang/include/llvm/Config/llvm-config.h
+++ b/linux-x64/clang/include/llvm/Config/llvm-config.h
@@ -72,10 +72,10 @@
 #define LLVM_VERSION_MINOR 0
 
 /* Patch version of the LLVM API */
-#define LLVM_VERSION_PATCH 3
+#define LLVM_VERSION_PATCH 8
 
 /* LLVM version string */
-#define LLVM_VERSION_STRING "9.0.3svn"
+#define LLVM_VERSION_STRING "9.0.8svn"
 
 /* Whether LLVM records statistics for use with GetStatistics(),
  * PrintStatistics() or PrintStatisticsJSON()