Android: Ignore sigpipe signals.  This prevents us from crashing on
android if stderr or stdout suffers and EPIPE.

Change-Id: I5ac124fdfdf3d158e0a7a853cd3516555ff1b18b
diff --git a/jni_android.go b/jni_android.go
index 15ac732..77a7e3a 100644
--- a/jni_android.go
+++ b/jni_android.go
@@ -9,6 +9,9 @@
 import (
 	"fmt"
 	"unsafe"
+	"os"
+	"os/signal"
+	"syscall"
 
 	"v.io/v23/context"
 	"v.io/v23/namespace"
@@ -44,6 +47,11 @@
 	env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
 	jOpts := jutil.Object(uintptr(unsafe.Pointer(jOptions)))
 
+	// Don't allow broken stderr/out to kill our program due to
+	// sigpipe.  Note that we just ignore all these signals.
+	ch := make(chan os.Signal)
+	signal.Notify(ch, syscall.SIGPIPE)
+
 	if err := Init(env); err != nil {
 		jutil.JThrowV(env, err)
 		return