installServerClient does not run $GS_HOME/shared/bin/create_gs_server_image and it should ... I think

[dalehenrich]

It is run during createStone, on demand, but I think a user is better prepared for install-time failures (trying to install a bunch of code from http servers to create devKitCommandLine image during installServerClient than createStone ... it gives an incorrect impression that createStone is failing ...