GitLab

* doc/emacs/cmdargs.texi (General Variables):
* doc/lispintro/emacs-lisp-intro.texi (Lisp History):
* doc/lispref/processes.texi (Network):
* doc/misc/gnus-coding.texi (Gnus Coding Style):
* doc/misc/gnus.texi (Oort Gnus):
* doc/misc/smtpmail.texi (Encryption): Remove references to obsolete
libraries.  (Bug#37964)