dprintf() with the exception that it doesn't write anything to the
syslog. The reason is that syslog_write() releases a semaphore and can
therefore not be invoked when the thread spinlock is held.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22428 a95241bf-73f2-0310-859d-f6bbb57e9c96