[libgo] Fix boost-1.68

ports/libgo/CONTROL

@@ -1,4 +1,4 @@
 Source: libgo
-Version: 2.8-1
+Version: 2.8-2
 Build-Depends: boost-context
 Description: The best stackful coroutine by c++11.

ports/libgo/boost-168.patch

@@ -0,0 +1,20 @@
+diff --git a/libgo/ctx_boost_context/context.h b/libgo/ctx_boost_context/context.h
+index 2db71c0..2f321fb 100644
+--- a/libgo/ctx_boost_context/context.h
++++ b/libgo/ctx_boost_context/context.h
+@@ -1,4 +1,4 @@
+-#include <boost/context/all.hpp>
++#include <boost/context/execution_context.hpp>
+ 
+ #if BOOST_EXECUTION_CONTEXT == 2  // boost version >= 1.61
+ # include "context_v2.h"
+diff --git a/libgo/ctx_boost_context/context_v2.h b/libgo/ctx_boost_context/context_v2.h
+index e415af4..59e2e29 100644
+--- a/libgo/ctx_boost_context/context_v2.h
++++ b/libgo/ctx_boost_context/context_v2.h
+@@ -1,4 +1,4 @@
+-#include <boost/context/all.hpp>
++#include <boost/context/stack_context.hpp>
+ 
+ namespace co
+ {

ports/libgo/portfile.cmake

@@ -1,9 +1,6 @@
 include(vcpkg_common_functions)
 
-if(VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
-    message("libgo currently only supports static linkage")
-    set(VCPKG_LIBRARY_LINKAGE static)
-endif()
+vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
 
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
@@ -11,7 +8,9 @@ vcpkg_from_github(
     REF v2.8
     SHA512 44784de4aec36ea321195c11c99a73de4f6f51285febdf6980e8aaced1fdfc0a34c6b1a8acc8c6b424e747310a1d7fb1604f722084c28ab91f8ebee15667d59b
     HEAD_REF master
-    PATCHES ${CMAKE_CURRENT_LIST_DIR}/cmake.patch
+    PATCHES
+        cmake.patch
+        boost-168.patch
 )
 
 vcpkg_download_distfile(ARCHIVE