-Turn off interpolation for an actor that just moved 128 units or more in one tic as the actor likely just teleported.

git-svn-id: http://odamex.net/svn/root/trunk@4009 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Have SDL ignore mouse events if SDLMouse driver is not initialized. This prevents unused mouse events from filling SDL's event queue when using raw mouse input.

git-svn-id: http://odamex.net/svn/root/trunk@4011 b0bcef46-2027-0410-bd56-ab726e9a1d04
-r4011 did not properly handle a user changing from raw mouse to SDL mouse. Fixed.

git-svn-id: http://odamex.net/svn/root/trunk@4012 b0bcef46-2027-0410-bd56-ab726e9a1d04
Use clock_get_time() on OSX, since it doesn't have librt.

git-svn-id: http://odamex.net/svn/root/trunk@4015 b0bcef46-2027-0410-bd56-ab726e9a1d04