syscall/linux/nl: Rewrite tbuffer to be based on a nicer function `align_types`
syscall/linux/nl: Use `align_types` directly in `ifla_f`
syscall/linux/types: Add `fds` and `credentials` methods to cmsg
Move `align` to helpers
Move align_types to helpers
helpers: align should be available in helpers itself
helpers: `t.buffer` isn't available from helpers
syscall/helpers: Fix type (alignement=>alignment)
syscall/linux/util: Use cmsg methods in `recvcmsg`
Merge pull request #53 from daurnimator/master

Misc commits