Add USE_TLS option to switch between old and new memory.c

cmake/system.cmake

@@ -214,6 +214,10 @@ if (CONSISTENT_FPCSR)
   set(CCOMMON_OPT "${CCOMMON_OPT} -DCONSISTENT_FPCSR")
 endif ()
 
+if (USE_TLS)
+  set(CCOMMON_OPT "${CCOMMON_OPT} -DUSE_TLS")
+endif ()
+
 # Only for development
 # set(CCOMMON_OPT "${CCOMMON_OPT} -DPARAMTEST")
 # set(CCOMMON_OPT "${CCOMMON_OPT} -DPREFETCHTEST")