Backport upsteam patch for beast core.

The beast module fails to build with clang16+/ gcc13+, it was fixed in boostorg/beast@72c2eeb
See more in GitHub issue: boostorg/beast#2648 (comment)

While here, sync OS versions checks with ports to apply llvm usage

devel/boost-all/compiled.mk

@@ -43,7 +43,8 @@ MAKE_ARGS+=	pch=off
 
 .include <bsd.port.options.mk>
 
-.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400000 && ${OSVERSION} < 1400079
+.if ${OPSYS} == FreeBSD && (${OSVERSION} >= 1500000 || \
+	(${OSVERSION} >= 1400000 && ${OSVERSION} < 1400097))
 USES+=	llvm:build
 CC=	${_LLVM_MK_PREFIX}/bin/clang
 CPP=	${_LLVM_MK_PREFIX}/bin/clang-cpp

devel/boost-libs/files/patch-boost_beast_ssl_ssl__stream.hpp

@@ -0,0 +1,33 @@
+From 72c2eeb3980ed0dc530de9241e25b247517de018 Mon Sep 17 00:00:00 2001
+From: Klemens Morgenstern <klemens.d.morgenstern@gmail.com>
+Date: Fri, 12 May 2023 22:40:31 +0800
+Subject: [PATCH] ssl_stream doesn't use BOOST_BEAST_ASYNC_TPARAM1 due to clang
+ errors.
+
+Closes #2661
+---
+ boost/beast/ssl/ssl_stream.hpp | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git boost/beast/ssl/ssl_stream.hpp boost/beast/ssl/ssl_stream.hpp
+index 7c4183a525..452320b722 100644
+--- boost/beast/ssl/ssl_stream.hpp
++++ boost/beast/ssl/ssl_stream.hpp
+@@ -673,7 +673,7 @@ class ssl_stream
+         ssl_stream<SyncStream>& stream,
+         boost::system::error_code& ec);
+ 
+-    template<class AsyncStream, BOOST_BEAST_ASYNC_TPARAM1 TeardownHandler>
++    template<class AsyncStream, typename TeardownHandler>
+     friend
+     void
+     async_teardown(
+@@ -697,7 +697,7 @@ teardown(
+ }
+ 
+ template<class AsyncStream,
+-        BOOST_BEAST_ASYNC_TPARAM1 TeardownHandler = net::default_completion_token_t<beast::executor_type<AsyncStream>>>
++        typename TeardownHandler = net::default_completion_token_t<beast::executor_type<AsyncStream>>>
+ void
+ async_teardown(
+     boost::beast::role_type role,