aya/xtask
Dave Tucker 938f979fe7 aya: Make MapData::pin pub
This is to solve a use-case where a user (in this case bpfd) may want
to:

- MapData::from_pin to open a pinned map from bpffs
- MapData::pin to pin that object into another bpffs

Both operations should be easily accomplished without needing to cast
a MapData into a concrete Map type - e.g aya::maps::HashMap.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
..
libbpf@a2258003f2 xtask: move libbpf submodule
public-api aya: Make MapData::pin pub
src xtask: extract `Errors` type
Cargo.toml Cargo.toml: Remove default-features settings