Update the Android NDK script to r25b

[chriswailes]

Updating the Android NDK in accordance with new platform support policy.

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @Amanieu (or someone else) soon.

Please see the contribution instructions for more information.

[chriswailes]

This is related to rust-lang/rust#102332

[Amanieu]

+ mv android-ndk-r25b-linux /android/ndk-x86_64
mv: cannot stat 'android-ndk-r25b-linux': No such file or directory

Perhaps the path within the zip is incorrect?

[chriswailes]

Perhaps the path within the zip is incorrect?

Sure was. Needed to drop the -linux suffix.

[Amanieu]

bench_black_box is now stable, you need to remove it from the unstable feature list.

[bors]

☔ The latest upstream changes (presumably b585b64) made this pull request unmergeable. Please resolve the merge conflicts.

[Amanieu]

ping @chriswailes, is this PR still relevant?

[Amanieu]

Actually it seems we've removed our Android CI. This is fine since stdarch doesn't really need OS-specific CI now that std::detect has been moved to the standard library.