Update fcp to have newer clang

Summary:
Make infer run with clang 3.7.0. Small changes are due to differences
in output of clang

NOTE: this diff will require recompiling clang (it takes time)

facebook-clang-plugins

@@ -1 +1 @@
-Subproject commit 331accb43f98e4c567a925def3c6e3b5302c781d
+Subproject commit 18f2b1d27208f42cb9a845ef917be84e8253fb92

infer/src/clang/cFrontend_config.ml

@@ -136,7 +136,7 @@ let handleFailureInFunction = "handleFailureInFunction:file:lineNumber:descripti
 
 let fbAssertWithSignalAndLogFunctionHelper = "FBAssertWithSignalAndLogFunctionHelper"
 
-let nonnull_attribute = "__nonnull"
+let nonnull_attribute = "_Nonnull"
 
 let pseudo_object_type = "<pseudo-object type>"
 

infer/src/clang/cFrontend_utils.ml

@@ -243,7 +243,7 @@ struct
 
   (*TODO: take the attributes into account too. To be done after we get the attribute's arguments. *)
   let is_type_nonnull qt attributes =
-    Utils.string_is_prefix CFrontend_config.nonnull_attribute qt.Clang_ast_t.qt_raw
+    Utils.string_contains CFrontend_config.nonnull_attribute qt.Clang_ast_t.qt_raw
 
   let pointer_counter = ref 0
 

infer/src/clang/cType_to_sil_type.ml

@@ -113,7 +113,7 @@ and sil_type_of_c_type translate_decl tenv c_type =
   | LValueReferenceType (type_info, type_ptr) ->
       let typ = qual_type_ptr_to_sil_type translate_decl tenv type_ptr in
       Sil.Tptr (typ, Sil.Pk_reference)
-  | AttributedType type_info ->
+  | AttributedType (type_info, _) ->
       (match type_info.Clang_ast_t.ti_desugared_type with
        | Some type_ptr ->
            (match Ast_utils.get_type type_ptr  with