Made C++ safe.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6994 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/arch/thread.h

@@ -1,4 +1,7 @@
 /*
+** Copyright 2002-2004, The OpenBeOS Team. All rights reserved.
+** Distributed under the terms of the OpenBeOS License.
+**
 ** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
 ** Distributed under the terms of the NewOS License.
 */
@@ -7,6 +10,10 @@
 
 #include <thread.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 int arch_team_init_team_struct(struct team *t, bool kernel);
 int arch_thread_init_thread_struct(struct thread *t);
 void arch_thread_init_tls(struct thread *thread);
@@ -31,4 +38,8 @@ void arch_check_syscall_restart(struct thread *t);
 // for any inline overrides
 #include <arch_thread.h>
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif	/* KERNEL_ARCH_THREAD_H */