emscripten 1.16.0 (new formula)

Closes #28417.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
emscripten: add 1.16.0 bottle.
emscripten: cleanup formula.
arangodb 2.1.1
arangodb: update 2.1.1 bottle.

Closes #29955.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
x264: fix SHA1 for stable and master branch

Fixes #29829.
x264: update r2412 bottle.

Closes #29957.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>