Minor adjustments to `xclip-mode`
Minor adjustments to `xclip-mode`

Switch back to using `xclip` from `xsel`. Both offer practically the same
functionality anyway, and according to the principle of least surprise, it is
better if `xclip-mode` actually uses `xclip`.

The logic to automatically activate the mode is changed as well, so it
activatesonly in the TTY Emacs daemon, and not in the Emacs daemon that's
indented for graphical environments.

amfranz/spacemacs.d