Source code move to SVN

[Adam Fedor]

We have moved the main source code repository for GNUstep to

https://gna.org/projects/gnustep

and converted it so that we use subversion to access all parts of the 
repository.

Note that if you would like to contribute to GNUstep and/or have write 
privileges to the repository, you need to sign a copyright assignment 
for to assign copyright for the parts you contribute to the FSF. If you 
would like more information, please let me know.

If you have already signed this form and would like write access, 
please get an account at gna.org, and let me know so I can add you to 
the developer list.