Add support for configuring output rotations
Add support for configuring output rotations

When running under DRM, this patch adds support for getting the
supported rotations of an output, listing them in the Screen Setup
dialog, and adds the ability to set a rotation on a given screen

Signed-off-by: Chris Michael <2c9adca9bdb4861297f022d161a6a7c2d4597bd5@osg.samsung.com>

tasn/enlightenment,rvandegrift/e,rvandegrift/e,tasn/enlightenment,rvandegrift/e,tasn/enlightenment