Move FrameStyle enumeration into MessageBox class
Move FrameStyle enumeration into MessageBox class

  * This is not a current compiling warning / error, but could be one in
the future, so I might as well be proactive and move this inside.
(See the next set of commits to see what I am talking about...)

i8degrees/nomlib,i8degrees/nomlib,i8degrees/nomlib,i8degrees/nomlib