md5sum: update rust-crypto
tail: fix build by changing uint to u64
Merge pull request #230 from Arcterus/rust-crypto

Fix build
Remove a bunch of non-utils from the to-do list
Merge pull request #235 from Arcterus/non-utils

Remove a bunch of non-utils from the to-do list
sleep: handle infinity
groups: fix argument parsing
Merge pull request #243 from Arcterus/sleep-inf

Fix some errors brought up by vi
tail: fix typo

Signed-off-by: Akira Hayakawa <ruby.wktk@gmail.com>
Merge pull request #244 from akiradeveloper/feature/fix-typo-tail

tail: fix typo
remove use of deprecated to_err_msg
gitignore: add vim temp files
GNU sync implementation
Merge pull request #250 from xanderfomin/sync

GNU sync implementation
c_types: fix c_passwd (struct passwd) memory layout on linux
id: linux specific pline()
Merge pull request #247 from ebfe/gitignore

gitignore: add vim temp files
Merge pull request #246 from ebfe/remove-to-err-msg

remove use of deprecated to_err_msg
Merge pull request #245 from ebfe/fix-id

id: fix segfault on linux
whoami: fix for Windows