During the refactor in 4bd419eb, PTRACE_DETACH was accidentally removed on
these targets. This re-adds it.

Refactor the GNU module

Rename the notbsd module to linux_like

Upgrade rlimit consts

cc @aidanhs - this should fix the error you are seeing.

Fix type of RLIMIT consts on linux gnu

Add missing TIOCGRS485, TIOCSRS485 constants to Linux

Closes #1094 .

Deprecate fixed width integer type aliases

cc @emilio - I think it makes sense to ensure that the latest released version of bindgen works properly with this change. That is, that even when asked to use C types from, e.g., `libc::`, it does not use aliases for the fixed-width integer C types (e.g. `libc::int64_t`) but uses Rust primitive types instead (e.g. `u64`).

Closes #1304 .

Add statx on Linux

Closes #1178.

Deprecate AF_MAX and PF_MAX

Closes #1094 .

Closes #1304 .

Closes #1178.

Cleanup asmjs

Correct datatype for various termios constants

This was a part of #625, but I moved it to a separate PR as it's a breaking change and those are currently blocked for Tier 1 platforms.