merge in oc-release history after reset to oc-dev
diff --git a/EventFlag.cpp b/EventFlag.cpp
index 4d370b0..7ce4edd 100644
--- a/EventFlag.cpp
+++ b/EventFlag.cpp
@@ -20,6 +20,7 @@
 #include <linux/futex.h>
 #include <sys/mman.h>
 #include <sys/syscall.h>
+#include <unistd.h>
 #include <utils/Log.h>
 #include <utils/SystemClock.h>
 #include <new>