Patch from dawn@burble.org to build on linux!

llvm-svn: 141593
diff --git a/lldb/source/Plugins/Process/Linux/ProcessLinux.cpp b/lldb/source/Plugins/Process/Linux/ProcessLinux.cpp
index 14571ed..2bc76f3 100644
--- a/lldb/source/Plugins/Process/Linux/ProcessLinux.cpp
+++ b/lldb/source/Plugins/Process/Linux/ProcessLinux.cpp
@@ -437,6 +437,13 @@
     return m_thread_list.GetSize(false);
 }
 
+uint32_t
+ProcessLinux::UpdateThreadList(ThreadList &old_thread_list, ThreadList &new_thread_list)
+{
+    // FIXME: Should this be implemented?
+    return 0;
+}
+
 ByteOrder
 ProcessLinux::GetByteOrder() const
 {