New Absolute Command - Rotate

A new resource Absolute Command->Rotate was added. It intend to give us precision in rotation operations we need to rotate elements to be aligned with a vector or plane. There are three option LMB,MMB and RMB, which MMB works like LMB plus run a snap operation and RMB - similar to Snap/Move - show up a dialog which will provide array options. Thanks to Arg Arg for help testing it [Micheus]

The wings_vec.erl was changed to enable the user change the "direction" of an "orientation" vector by adding the option "[2] Invert" to the text in the right side in the information line. The direction is something important for this new command.

The thread at Wings3d forum: http://www.wings3d.com/forum/showthread.php?tid=729

![rotate-lmb](http://i1330.photobucket.com/albums/w578/Micheus/Wings3D%20-%20Forum/rotate-LMB_zps9e0e9e33.png)
![rotate-mmb](http://i1330.photobucket.com/albums/w578/Micheus/Wings3D%20-%20Forum/rotate-MMB_zps18789128.png)