docker/libcontainer — pull request #251 by unclejack (2014-11-03 19:53:07+00:00)
Title: use system.Set{u,g}id to fix Set{u,g}id on Go 1.4

This fixes errors like this one with Go tip (future 1.4) and Go 1.4b1:
```
runtime_test.go:604: finalize namespace setup user setgid operation not supported
```