Fixes compatibility with Borland C++Builder. Original patch by Josh

Kelley.  Simplified by Zhanyong Wan.

include/gtest/internal/gtest-internal.h

@@ -873,6 +873,11 @@ class ImplicitlyConvertible {
   static const bool value =
       sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1;
 # pragma warning(pop)           // Restores the warning state.
+#elif defined(__BORLANDC__)
+  // C++Builder cannot use member overload resolution during template
+  // instantiation.  The simplest workaround is to use its C++0x type traits
+  // functions (C++Builder 2009 and above only).
+  static const bool value = __is_convertible(From, To);
 #else
   static const bool value =
       sizeof(Helper(ImplicitlyConvertible::MakeFrom())) == 1;