Added labelled thread names to help with some debugging activity. Right now,...

src/platform-nullos.cc

Index: src/platform-nullos.cc
===================================================================
--- src/platform-nullos.cc	(revision 6139)
+++ src/platform-nullos.cc	(working copy)
@@ -335,15 +335,28 @@
 
 
 Thread::Thread() : ThreadHandle(ThreadHandle::INVALID) {
+  set_name("v8:<unknown>");
   UNIMPLEMENTED();
 }
 
 
+Thread::Thread(const char* name) : ThreadHandle(ThreadHandle::INVALID) {
+  set_name(name);
+  UNIMPLEMENTED();
+}
+
+
 Thread::~Thread() {
   UNIMPLEMENTED();
 }
 
 
+void Thread::set_name(const char* name) {
+  strncpy(name_, name, sizeof(name_));
+  name_[sizeof(name_) - 1] = '\0';
+}
+
+
 void Thread::Start() {
   UNIMPLEMENTED();
 }