Allow user to specify name for ogl window.  The name attribute was previous parsed by the consumer but never used when initializing the ogl window.
Allow ogl window to be borderless.  I found this useful in integrating a "preview" window into a client app.  The client app can look for the window handle via it's name and then set it to stay on top via win32 api.

<borderless>true</borderless>
or
ADD 1 SCREEN BORDERLESS
Merge pull request #199 from CasparCG/ogl-options

New ogl window options