Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Interim fix for "Login not found" error.

PR: bin/196514
MFC after: 3 days
X-MFC-to: stable/10

Add protection against input containing single-quotes (e.g., i18n-users).

For non-interactive scripts, forgot to check we were given an argument
before proceeding.

Fix a bug preventing errors from pw(8) from filtering up to a dialog.
Programs running as rvalue to pipe cannot access current namespace.

Reduce the sleep cycle when using dialog(1) to 1-second.

Fix comments and whitespace.

Rewrite groupmgmt -- hooking it into the scripting system with dispatch
commands groupAdd, groupDelete, and groupEdit. Getting rid of the awkward-
to-use `groupinput' bolt-on which Ron and I talked about rewriting.