Add support for changing VCS root using TeamCity REST API

[borism11]

I would like the following method added:

bool SaveVcsRoot(VcsRoot vcsRoot);

[gsgumer]

sir how to pass vcs parameter using that method AttachVcsRoot but not work

[gsgumer]

Anyone can help me

[borismod]

I am in doubt anyone maintains this project. There is a newer one called FluentTc: github.com/QualiSystems/FluentTc

Feel free to have a look. If there is anything that is missing let us know, we'll be glad to add it.