Auto merge of #538 - malbarbo:ci-android, r=alexcrichton

Add and fix tests for {i686, aarch64}-linux-android targets

I think that these changes do not breaks compatibility.

There are some types and constants changes to i686 and aarch64, but I see these changes as bug fixes instead of breaking changes. Also the type time64_t was remove from aarch64 because it is not defined in this arch.

Fixes #536