Changed return types to status_t where appropriate. Now usable from C++. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3691 a95241bf-73f2-0310-859d-f6bbb57e9c96
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96