dotcloud/docker — pull request #1963 by rogpeppe (2013-09-23 00:19:41+00:00)
Title: Use less reflection in command-line method invocation

Fairly trivial change, but the code is cleaner for it, I think - why use CallSlice when
you can call the method directly?

Please ignore this request if docker is required to compile with pre-1.1 Go.