FIXUP LWG3848: mark libconcepts

Author: burblebee

source/ranges.tex

@@ -10580,7 +10580,7 @@
     constexpr explicit adjacent_view(V base);
 
 
-    constexpr V base() const & requires copy_constructible<V> { return @\exposid{base_}@; }
+    constexpr V base() const & requires @\libconcept{ccopy_constructible}@<V> { return @\exposid{base_}@; }
     constexpr V base() && { return std::move(@\exposid{base_}@); }
 
     constexpr auto begin() requires (!@\exposconcept{simple-view}@<V>) {
@@ -11224,7 +11224,7 @@
     adjacent_transform_view() = default;
     constexpr explicit adjacent_transform_view(V base, F fun);
 
-    constexpr V base() const & requires copy_constructible<@\exposid{InnerView}@> { return @\exposid{inner_}@.base(); }
+    constexpr V base() const & requires @\libconcept{copy_constructible}@<@\exposid{InnerView}@> { return @\exposid{inner_}@.base(); }
     constexpr V base() && { return std::move(@\exposid{inner_}@).base(); }
 
     constexpr auto begin() {
@@ -12723,7 +12723,7 @@
   public:
     constexpr explicit slide_view(V base, range_difference_t<V> n);
 
-    constexpr V base() const & requires copy_constructible<V> { return @\exposid{base_}@; }
+    constexpr V base() const & requires @\libconcept{copy_constructible}@<V> { return @\exposid{base_}@; }
     constexpr V base() && { return std::move(@\exposid{base_}@); }
 
     constexpr auto begin()