release-142ebf7: Enable 64-bit Android builds for many libraries

Summary:
I have no idea why these builds were disabled.  Probably some combination of legit reasons,
copy/paste, and people just trying to disable arm(v5) builds without thinking about 64-bit.
In any case, let's enable them and see what works.  Note that Buck won't actually try to
build the 64-bit versions unless the user requests to build an app with a 64-bit cpu filter.

Reviewed By: BurntBrunch

Differential Revision: D9994690

fbshipit-source-id: 400e2d6172f04a7bd527dd5e5249409942d02234