am 8bdb3249: Merge remote-tracking branch \'toybox/master\' into HEAD

am 8bdb3249: Merge remote-tracking branch \'toybox/master\' into HEAD

* commit '8bdb32495fe8f0a038fe0ac02905dc4f2d8c660b':
  Attempt to fix the mkdir LSM race.
  ls -lZ wasn't putting a space before the xattr output.
  mkdir: Fix argument of option -Z
  Make "grep -r regex" work on implicit "." if no files specified.
  Add -Z support to mkdir, based on a patch from Jose Bollo.
  Adapted patch from José Bollo to do the "tonight we're gonna api like it's 1999 and every path ever is from cwd or root" api versions for sockets and as a fallback of the open fails.
  Switch id over to new infrastructure, switch id to use FORCE_FLAGS, and make lib/lsm.h auto-include from toys.h.
  Fix "ls -Z . toys" segfaulting, because preprocessing skipped.
  Recent commit broke ls -R (test reversed), and "ls -R singledir" should show label: at the start (yes, even "ls -R" in an empty dir).
  More ls -Z upgrading. Move TOYBOX_SELINUX and TOYBOX_SMACK support from portability.h to new lib/lsm.h. Update ls.c to use it.
  stat: fix group name