ClangPlugins: Change name of variable used for test compile options

This makes it more clear what it is used for

Meta/Lagom/ClangPlugins/CMakeLists.txt

@@ -9,7 +9,7 @@ function(clang_plugin target_name)
 
     add_custom_target(${target_name}Target DEPENDS ${target_name})
 
-    set_property(GLOBAL APPEND PROPERTY CLANG_PLUGINS_ALL_COMPILE_OPTIONS -fplugin=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/lib${target_name}.so)
+    set_property(GLOBAL APPEND PROPERTY CLANG_PLUGINS_COMPILE_OPTIONS_FOR_TESTS -fplugin=${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR}/lib${target_name}.so)
 
     add_lagom_library_install_rules(${target_name})
 endfunction()

Tests/ClangPlugins/CMakeLists.txt

@@ -3,8 +3,8 @@ include(AddLLVM)
 
 find_package(Python3 REQUIRED COMPONENTS Interpreter)
 
-get_property(CLANG_PLUGINS_ALL_COMPILE_OPTIONS GLOBAL PROPERTY CLANG_PLUGINS_ALL_COMPILE_OPTIONS)
-list(APPEND CLANG_PLUGINS_ALL_COMPILE_OPTIONS -std=c++23 -Wno-user-defined-literals -Wno-literal-range)
+get_property(CLANG_PLUGINS_COMPILE_OPTIONS_FOR_TESTS GLOBAL PROPERTY CLANG_PLUGINS_COMPILE_OPTIONS_FOR_TESTS)
+list(APPEND CLANG_PLUGINS_COMPILE_OPTIONS_FOR_TESTS -std=c++23 -Wno-user-defined-literals -Wno-literal-range)
 
 get_property(CLANG_PLUGINS_INCLUDE_DIRECTORIES TARGET AK PROPERTY INCLUDE_DIRECTORIES)
 list(APPEND CLANG_PLUGINS_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})

Tests/ClangPlugins/lit.site.cfg.py.in

@@ -18,7 +18,7 @@ config.enable_shared = @ENABLE_SHARED@
 config.host_arch = "@HOST_ARCH@"
 config.python_executable = "@Python3_EXECUTABLE@"
 # config.has_plugins = @CLANG_PLUGIN_SUPPORT@
-config.plugin_opts = "@CLANG_PLUGINS_ALL_COMPILE_OPTIONS@"
+config.plugin_opts = "@CLANG_PLUGINS_COMPILE_OPTIONS_FOR_TESTS@"
 config.plugin_includes = "@CLANG_PLUGINS_INCLUDE_DIRECTORIES@"
 
 import lit.llvm