Merge pull request #266 from meilier/fix-cflags-DLOG_LOCK_OVERHEAD

fix compile error when open CFLAGS -DLOG_LOCK_OVERHEAD

runtime/src/generic_thread.c

@@ -4,6 +4,9 @@
 #include "arch/getcycles.h"
 #include "debuglog.h"
 
+extern uint32_t                     runtime_processor_speed_MHz;
+extern uint32_t                     runtime_quantum_us;
+
 /* Implemented by listener and workers */
 
 thread_local uint64_t generic_thread_lock_duration   = 0;