[NaCl SDK] nacl_io: Add initial implementations of kill and signal

native_client_sdk/src/tests/nacl_io_test/event_test.cc

Index: native_client_sdk/src/tests/nacl_io_test/event_test.cc
diff --git a/native_client_sdk/src/tests/nacl_io_test/event_test.cc b/native_client_sdk/src/tests/nacl_io_test/event_test.cc
index 24e22d5fc4804ff30de2b8fce4f5f6e1609642fd..11326bf0832b44031084bdca2fdf5b7d582513eb 100644
--- a/native_client_sdk/src/tests/nacl_io_test/event_test.cc
+++ b/native_client_sdk/src/tests/nacl_io_test/event_test.cc
@@ -6,6 +6,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/time.h>
 
@@ -325,7 +326,7 @@ struct SignalInfo {
   uint32_t events;
 };
 
-void *SignalEmitter(void *ptr) {
+static void *SignalEmitterThread(void *ptr) {
   SignalInfo* info = (SignalInfo*) ptr;
   struct timespec ts;
   ts.tv_sec = 0;
@@ -356,7 +357,7 @@ TEST(EventTest, EmitterSignalling) {
   siginfo.ms_wait = TIMEOUT_SHORT;
   siginfo.events = KE_EXPECTED | KE_FILTERED;
   pthread_t tid;
-  pthread_create(&tid, NULL, SignalEmitter, &siginfo);
+  pthread_create(&tid, NULL, SignalEmitterThread, &siginfo);
 
   // Wait for the signal from the other thread and time it.
   gettimeofday(&start, NULL);