Merge pull request #465 from Arcterus/master

nohup: fix build on Macs (closes #463)
Fix build for latest Rust
Merge pull request #468 from Arcterus/fix-build

Fix build for latest Rust
Merge pull request #466 from Arcterus/master

base64: fix build (assuming rust-lang/rust#19594 is merged)
Fix build with rust master
Merge pull request #471 from ebfe/fix-build-master

Fix build with rust master
Update rust-crypto
Make rust-crypto link to deps/time
Merge pull request #472 from ebfe/fix-build-master

Update rust-crypto
Update time
Update for latest Rust