[egit-dev] Add git checkout --orphan command

[taichi sato <ryushi@xxxxxxxxx>]

Hi, all

i try to cotribute my gist from here.

https://github.com/eclipse/jgit/pull/11

i already push my patch to gerrit below

https://git.eclipse.org/r/#/c/20095/

my tests are passed in my local.

my environment is windows7 64bit jdk1.7 or jdk1.5

but my tests are failed on Hudson.

I think that it can not lock a file is the cause.

https://hudson.eclipse.org/egit/job/jgit.gerrit/4352/

so i make 2 patches, but tests are failed yet.

What would I need to do?