Add NO_AUTOMOUNT AtFlags, STATX_DIOALIGN mask and reorder bitflag to follow numbering

[ETKNeil]

The statx syscall accept the AT_NO_AUTOMOUNT flag , however this one was not listed inside the AtFlags bitflag.
This PR add such flag from the underlying raw types, it also re-orders the bitflag to be in correlation with the underlying values.

The statx syscall accept the STATX_DIOALIGN mask since Linux 6.1 however this one was not listed inside the StatxFlags bitflag.
This PR add such flag from the underlying raw types.

Note, can_compile signature in build.rs was changed on the 13th of January and you can remove the reference to format (thx clippy)

[ETKNeil]

this will need to add first STATX_DIOALIGN to libc (rust-lang/libc#3076)

[sunfishcode]

This looks good to me, so now it's just waiting on the libc PR.

[sunfishcode]

The libc PR here landed and is released as of libc 0.2.140, so now this just needs a rebase.