* added a SidebySide Layout

* Reworked, so both screen have the same height and cleaned up screen translates.

* added the option in the UI, hope this is the right way to do it. formated framebuffer_layout.cpp

* delete the x64 files

* deleted ui_configure_graphics.h

* added Option for the Layout in the xml

* got rid of SIDE_BY_SIDE_ASPECT_RATIO because it was useless. pulled translate into variables

* changed shift variables to u32 and moved them in their respective branch. remove notr="true" for the Screen layout drop down

* reworked intends :). changed function description for SideFrameLayout

* some description reworking

video_core didn't even properly use them, and they were the source of
many otherwise-unnecessary dependencies from core to video_core.

This removes a dependency inversion between core and common. It's also
the proper place for the file since it makes screen layout decisions
specific to the 3DS.

And other minor style changes

Also minor style changes

Allows users to choose a single screen layout or a large screen layout.
Adds a configuration option to change the prominent screen.