[ADT] Deprecate Any::hasValue

[kazu]

Summary

This patch deprecates Any::hasValue as I've migrated all known uses of
it to Any::has_value. I'm planning to remove the deprecated method in
3 months or so.

[dblaikie]

Great :)

llvm/include/llvm/ADT/Any.h

Any &swap(Any &Other) {
     return *this;
   }
 
   Any &operator=(Any Other) {
     Storage = std::move(Other.Storage);
     return *this;
   }
 
+  LLVM_DEPRECATED("Use has_value instead.", "has_value")
   bool hasValue() const { return !!Storage; }
   bool has_value() const { return !!Storage; }
 
   void reset() { Storage.reset(); }
 
 private:
   template <class T> friend T any_cast(const Any &Value);
   template <class T> friend T any_cast(Any &Value);