MFC: r322097, r322203
- Since r301131 (MFCed to stable/10 in r321895), /etc/localtime is also
installed when selecting UTC in interactive configurations. Thus, the
code added in r220172 which treats a NULL zone file name as UTC and
removes /etc/localtime in that case can go again.
- Consistently refer to "could not delete" (as chosen by the oldest such
code in here) when unlink(2) fails instead of a to mixture of "delete"
and "unlink" in error messages.
git-svn-id: svn://svn.freebsd.org/base/stable/10@322376
ccf9f872-aa2e-dd11-9fc8-
001c23d0bc1f