Revert "-O3 full optimizations for Lollipop"

This reverts commit 854e1b1b6ee43321d290cc01409aed3c42230549.
Revert "Revert "Build: Revert old O3 options""

This reverts commit 7e29fc1bf08305ae5e8c4fbd27bf0ddd537fc9d3.