.gitignore: Ignore build artifacts since 8afea07
.gitignore: Ignore build artifacts since 8afea07

Commit 8afea07 was the merge that added WGL support.

evelikov/waffle,waffle-gl/waffle,maurossi/waffle,waffle-gl/waffle,chadversary/waffle,fjhenigman/waffle,waffle-gl/waffle,dcbaker/waffle,fjhenigman/waffle,chadversary/waffle,maurossi/waffle,evelikov/waffle,chadversary/waffle,waffle-gl/waffle,evelikov/waffle,dcbaker/waffle,maurossi/waffle,dcbaker/waffle,fjhenigman/waffle