Merge pull request #5 from Narann/master

Remove deprecated conditions and a unused variable
Merge pull request #7 from Narann/master

Remove few (very) old code dating from when Rice was DirectX compatible.
Switch by default to SDL2 for Mupen64Plus 2.1

The current version of SDL is 2.0.3. All new releases of distributions contain
this library already. Current Linux distributions and OpenBSD even backporting
patches from Mupen64Plus 2.1 repo to use SDL 2. Android and other mobile
platform don't have support for legacy SDL 1.2.

People like Anthony J. Bentley and Riley Labrecque already requested
a new release of Mupen64Plus 2.1 with SDL2
SDL 1.2 is not deprecated for us, and we shouldnt frighten the user with 6 lines of exclamation points
Merge pull request #8 from Narann/master

Remove Nvidia combiner and anything related, update config.
use 2 separate checks for config api