Update some of the OpenGL demos so things can be built with emscripten#2076

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sortofsleepy wants to merge 3 commits intocinder:masterfrom

sortofsleepy:emscripten-demo-update

Commits on Jan 4, 2019

update demos so things can be built with emscripten
sortasleepy
committed
reset Visual studio project settings to what they ought to be on current master branch for superformula sample
sortasleepy
committed
update #define statements to better match styling
sortasleepy
committed