Executor is an interface instead of a struct
Formatting
Refactored scheduler a little bit.
Merge branch 'refactor' of https://github.com/mesosphere/mesos-go into refactor
more refactored.
Changed import path from mesosphere to mesos.
Fixed cgo comment pragmas.

Moved the include path from cflag to cxxflag.
Merge branch 'master' of github.com:mesos/mesos-go