[yocto] Eclipse Plugin EGit investigation result

[Ke, Liping]

Hi, Jessica

I verified that if we use git from shell to clone a tree first, create the new project, and then use egit to manage the project,
everything is fine.
It will detect that .git repository is there and will not repeatedly create one. 
So egit will not conflict with native command line git operations. The two actually
Share the same .git database.

So I think egit has covered all we need. We can suggest user use that plugin to manage
his local changes,patches,commits.


Thanks& Regards,
criping