Merge pull request #192 from Arcterus/master

id: remove deprecation warning
to_{strbuf,owned} -> to_string
update rust-crypto
Merge pull request #193 from ebfe/fix-build-master

Fix build with rust master
add uutils multicall binary
head: unwrap IoResult before printing
Merge pull request #196 from ebfe/fix-head

head: unwrap IoResult before printing
modified:   .gitignore
Update .gitignore
Merge pull request #197 from Heather/master

modified:   .gitignore
silence dead code warnings in multicall build
multicall: don't build true/false crates
Merge pull request #195 from ebfe/multicall

Add a multicall binary
Improve cat performance
Merge pull request #189 from mahkoh/cat

Improve cat performance
remove todo
Merge pull request #199 from mahkoh/readme

remove todo
remove remaining uses of ~[T]
Merge pull request #202 from ebfe/remove-tilde

remove remaining uses of ~[T]
Update to nightly