Disable Thread-Local-Storage

Index: src/csync/std/c_private.h
--- src/csync/std/c_private.h.orig
+++ src/csync/std/c_private.h
@@ -138,7 +138,7 @@ typedef char           mbchar_t;
 #endif
 
 /* FIXME: Implement TLS for OS X */
-#if defined(__GNUC__) && !defined(__APPLE__)
+#if defined(__GNUC__) && !defined(__APPLE__) && !defined(__OpenBSD__)
 # define CSYNC_THREAD __thread
 #elif defined(_MSC_VER)
 # define CSYNC_THREAD __declspec(thread)
