format: gofmt the following files

src/mesos.apache.org/example_executor/main.go
src/mesos.apache.org/example_framework/main.go
src/mesos.apache.org/mesos/executor.go
src/mesos.apache.org/mesos/scheduler.go
Merge pull request #2 from yifan-gu/gofmt

format: gofmt the following files
Removes unused files, use cgo to compile C++ and C code
copy gone wrong
make compilation work on linux too
Merge pull request #6 from casualjim/standalone-lib

Removes unused files, use cgo to compile C++ and C code
Changed path to Mesosphere GH
Change to public repo
moved repo to mesos/mesos-go.