WinGui: Don't allow previews less than 32x32 as it'll crash.  Handle SEH exceptions for this method.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6561 b64f7644-9d1e-0410-96f1-a4d463321fa5
WinGui: Adding Experimental to Static Window title.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6562 b64f7644-9d1e-0410-96f1-a4d463321fa5