cat: fix build
add multicall build to travis
Merge pull request #291 from ebfe/cat

cat: fix build
Merge pull request #292 from ebfe/travis

add multicall build to travis
comm: exit with status 1 on invalid arguments
Implement mkfifo
Merge pull request #293 from ebfe/comm

comm: exit with status 1 on invalid arguments
hashsum and its aliases
Merge pull request #297 from torkve/master

hashsum and its (md5sum,sha1sum,...)
Merge pull request #294 from ebfe/mkfifo

Implement mkfifo
dirname, basename, env, head, id, sync, touch: exit with status 1 on invalid arguments
Implement link
update readme
Merge pull request #296 from ebfe/exit_status

Partial exit status cleanup
Merge pull request #295 from ebfe/link

Implement link
Update rust-crypto
Merge pull request #298 from ebfe/update-rust-crypto

Update rust-crypto
uutils: fix hashsum
Merge pull request #299 from Arcterus/hashsum-fix

uutils: fix hashsum
seq: pass all Busybox tests