File rename can break project file

[galich]

For projects under SVN try to rename file to the name that already exists. An exception happens:

Error
---------------------------
File renamed exception: ICSharpCode.Svn.SvnClientException: Path '...\ErrorCodes.cs' already exists ---> SharpSvn.SvnEntryException: Path '...\ErrorCodes.cs' already exists

   at SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, SvnException error, Object targets)

   at SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, svn_error_t* error, Object targets)

   at SharpSvn.SvnClient.Move(ICollection`1 sourcePaths, String toPath, SvnMoveArgs args)

   at SharpSvn.SvnClient.Move(String sourcePath, String toPath, SvnMoveArgs args)

   at ICSharpCode.Svn.SvnClientWrapper.Move(String from, String to, Boolean force)

   --- End of inner exception stack trace ---

   at ICSharpCode.Svn.SvnClientWrapper.Move(String from, String to, Boolean force)

   at ICSharpCode.Svn.Commands.RegisterEventsCommand.FileRenaming(Object sender, FileRenamingEventArgs e)

After clicking OK/Continue you will get broken project file with multiple entries of the same name.