MDEV-23461 mysql_upgrade_wizard.exe differs from mariadb-upgrade-wizard.exe

The post-build custom command to embed Vista elevation manifest into
mariadb-upgrade-wizard.exe seems to do
something nasty to the executable, perhaps it removes and recreates it.

Thus the previously created hardlink mysql_upgrade_wizard is not marked
to require elevation.

Solved by using MANIFESTUAC linker flag, rather than invoke mt.exe.
This avoids an extra post-build step that modifies mariadb-upgrade-wizard.exe

win/upgrade_wizard/CMakeLists.txt

@@ -35,17 +35,12 @@ INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/sql)
 MYSQL_ADD_EXECUTABLE(mariadb-upgrade-wizard
   upgrade.cpp upgradeDlg.cpp upgrade.rc ${UPGRADE_WIZARD_SOURCES}
   COMPONENT Server)
+
+
 TARGET_LINK_LIBRARIES(mariadb-upgrade-wizard ${UPGRADE_WIZARD_LINK_LIBRARIES})
 # upgrade_wizard is Windows executable, set WIN32_EXECUTABLE so it does not
 # create a console.
-SET_TARGET_PROPERTIES(mariadb-upgrade-wizard PROPERTIES WIN32_EXECUTABLE 1)
-
-# Embed Vista "admin" manifest, since upgrade_wizard needs admin privileges
-# to change service configuration. Due to a CMake bug http://www.vtk.org/Bug/view.php?id=11171
-# it is not possible currenly to do it with linker flags. Work around is to use
-# manifest tool mt.exe and embed the manifest post-build.
-ADD_CUSTOM_COMMAND(
-  TARGET mariadb-upgrade-wizard POST_BUILD
-  COMMAND mt.exe -manifest ${CMAKE_CURRENT_SOURCE_DIR}/upgrade_wizard.exe.manifest
-  "-outputresource:$<TARGET_FILE:mariadb-upgrade-wizard>;#1"
+SET_TARGET_PROPERTIES(mariadb-upgrade-wizard PROPERTIES
+  WIN32_EXECUTABLE 1
+  LINK_FLAGS "/MANIFESTUAC:level='requireAdministrator'"
 )