Remove the GetSequenceMutex timeout that isn't being used in the GDB remote plug-in. 

Also fixed the ProcessLinux, ProcessPOSIX and ProcessFreeBSD to have the correct UpdateThreadList() prototype.

llvm-svn: 154603
diff --git a/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.h b/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.h
index dd887cf..adcdee5 100644
--- a/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.h
+++ b/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.h
@@ -105,7 +105,7 @@
     virtual uint32_t
     UpdateThreadListIfNeeded();
 
-    virtual uint32_t
+    virtual bool
     UpdateThreadList(lldb_private::ThreadList &old_thread_list, 
                      lldb_private::ThreadList &new_thread_list) = 0;