aya/xtask
Dave Tucker 0c58bb66b6 integration-test: Fix build.rs output
The cargo::warning seems to ignore output after a newline.
Iterate over the entire rendered message and print it line-by-line.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
..
libbpf@a2258003f2 xtask: move libbpf submodule
public-api aya: bless API
src integration-test: Fix build.rs output
Cargo.toml Cargo.toml: Remove default-features settings