Auto merge of rust-lang#1056 - faern:release, r=alexcrichton

Bump version to 0.2.43

Would be nice to have the new align feature from rust-lang#1044 available for general use. But mostly I want this released since I have problems using the align feature for a PR on libstd, and I suspect it's somehow because I try to use an unpublished libc (rust-lang/rust#52872).

Auto merge of rust-lang#1012 - redox-os:master, r=alexcrichton

Bump version to 0.2.42

Closes rust-lang#1011

Auto merge of rust-lang#989 - faern:release-0-2-41, r=alexcrichton

Bump to 0.2.41

I mainly need the change that makes the fields of `nlmsghdr` public (c8e9232).

Auto merge of rust-lang#955 - afck:master, r=alexcrichton

Add MCL_CURRENT and MCL_FUTURE to s390.

Auto merge of rust-lang#939 - ctrlcctrlv:master, r=alexcrichton

Add FreeBSD `get[pw|gr]ent_r`, forgotten in rust-lang#934

Sorry, accidentally forgot this when submitting rust-lang#934..

Auto merge of rust-lang#934 - ctrlcctrlv:master, r=alexcrichton

Add passwd/group APIs needed for nix-rust/nix#864

Hope I did this right. I only added platforms I could personally test. . .

cc: @gnzlbg

Version 0.2.37

Version 0.2.36

Version 0.2.35

Version 0.2.34