Deprecate thrust macros from type_deduction.h (#3501) (#3511)

thrust/thrust/detail/type_deduction.h

@@ -30,16 +30,18 @@
 
 /// \def THRUST_MVCAP(x)
 /// \brief Capture `x` into a lambda by moving.
-///
+/// deprecated [Since 2.8]
 #define THRUST_MVCAP(x) x = ::std::move(x)
 
 /// \def THRUST_RETOF(invocable, ...)
 /// \brief Expands to the type returned by invoking an instance of the invocable
 ///        type \a invocable with parameters of type \c __VA_ARGS__. Must
 ///        be called with 1 or fewer parameters to the invocable.
-///
-#define THRUST_RETOF(...)   THRUST_PP_DISPATCH(THRUST_RETOF, __VA_ARGS__)
-#define THRUST_RETOF1(C)    decltype(::std::declval<C>()())
+/// deprecated [Since 2.8]
+#define THRUST_RETOF(...) THRUST_PP_DISPATCH(THRUST_RETOF, __VA_ARGS__)
+/// deprecated [Since 2.8]
+#define THRUST_RETOF1(C) decltype(::std::declval<C>()())
+/// deprecated [Since 2.8]
 #define THRUST_RETOF2(C, V) decltype(::std::declval<C>()(::std::declval<V>()))
 
 /// \def THRUST_RETURNS(...)
@@ -88,6 +90,7 @@
     }                                  \
     /**/
 #else
+/// deprecated [Since 2.8]
 #  define THRUST_DECLTYPE_RETURNS_WITH_SFINAE_CONDITION(condition, ...)                              \
     noexcept(noexcept(__VA_ARGS__))->typename std::enable_if<condition, decltype(__VA_ARGS__)>::type \
     {                                                                                                \