zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/nptl/pthread_setgid.c b/ap/build/uClibc/libpthread/nptl/pthread_setgid.c
new file mode 100644
index 0000000..b06bffb
--- /dev/null
+++ b/ap/build/uClibc/libpthread/nptl/pthread_setgid.c
@@ -0,0 +1,3 @@
+#define SINGLE_THREAD
+#define __setgid pthread_setgid_np
+#include <setgid.c>