Ask to enable advanced pixel shaders if updating from b37 or less
Ask to enable advanced pixel shaders if updating from b37 or less

To people who have advanced pixel shaders already enabled, or to fresh
installations of HaloMD, this message will not appear.

This will also change lens flares to Extreme (set to Low by default).
It will also set Detail Objects (disabled if Pixel Shaders are
disabled).

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