Merge pull request #524 from boostorg/pr/boost-clang-version-4

Update BOOST_CLANG_VERSION to account for XCode 16.3, 16.4, 26.0, and…

Author: pdimov

include/boost/config/compiler/clang_version.hpp

@@ -11,7 +11,10 @@
 
 // https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
 
-# if BOOST_CLANG_REPORTED_VERSION >= 160000
+# if BOOST_CLANG_REPORTED_VERSION >= 170000
+#   define BOOST_CLANG_VERSION 190104
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 160000
 #   define BOOST_CLANG_VERSION 170006
 
 # elif BOOST_CLANG_REPORTED_VERSION >= 150000