* Simplify distro
Also a ton of drive-by fixing around builds:
- simplified many oneliners
- fixed missing custom npm registry call setups
- remove unnecessary and duplicate work during builds
- many many fixes
* fix: use clang and libcxx from chromium
* chore: add flags for Link-Time Optimization
libcxx builds from upstream are built with LTO, avoiding these
flags will cause miscompiles
* chore: add lto flags to compilation units
João Moreno
Matt Bierner
Alex Dima
Robo