xo-object: improve GC unittest + prep to integrate w/ xo::reflect

src/alloc/CMakeLists.txt

@@ -6,11 +6,12 @@ set(SELF_SRCS
     ArenaAlloc.cpp
     ListAlloc.cpp
     GC.cpp
+    GcStatistics.cpp
     Object.cpp
     Forwarding1.cpp
 )
 
 xo_add_shared_library4(${SELF_LIB} ${PROJECT_NAME}Targets ${PROJECT_VERSION} 1 ${SELF_SRCS})
-xo_dependency(${SELF_LIB} indentlog)
+xo_dependency(${SELF_LIB} reflect)
 
 #end CMakeLists.txt