Document the template argument deduction patterns that Anders' patch supports

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73071 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateDeduction.cpp b/lib/Sema/SemaTemplateDeduction.cpp
index db7e622..fe779eb 100644
--- a/lib/Sema/SemaTemplateDeduction.cpp
+++ b/lib/Sema/SemaTemplateDeduction.cpp
@@ -265,6 +265,9 @@
       return false;
     }
       
+    //     type(*)(T) 
+    //     T(*)() 
+    //     T(*)(T) 
     case Type::FunctionProto: {
       const FunctionProtoType *FunctionProtoArg = 
         dyn_cast<FunctionProtoType>(Arg);