from OS.h, sorry for triggering a complete rebuild.
To avoid doing a syscall for find_thread(0), the assembly
version is now in libroot. For BeOS R5 compatibility,
_kfind_thread_ is retained. This will fix some compile
problems, and provides a cleaner OS.h for future Haiku
versions.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14014 a95241bf-73f2-0310-859d-f6bbb57e9c96