libedit history interface is still used. This gives the following
new features/bug fixes:
 - Quote output of alias, export, readonly builtins
 - -L (logical) and -P (physical) options added to cd and pwd, logical
   behaviour made default.
 - -C (noclobber) option and >>| redirection is implemented
 - hash builtin only shows normal commands, no functions or builtins
 - -u (nounset) option is implemented
 - fc builtin's -e option works correctly again
 - No longer assumes there is a tty on fd 2 (PR 36671)
 - fg/bg command show more info about job being manipulated
 - -l and -s options added to jobs builtin, output closer to POSIX spec.
 - %+ (current job) %- (previous job) and %? (substring) job ID's implemented
 - >&- (and similar) redirection operators close descriptors correctly
 - set +o output corrected
 - Style: __FBSDID, __P removal, ANSI-style function declarations

  PATH=... command

Noted by and fix works for Marcel Moolenaar <marcel@scc.nl>

Obtained from: NetBSD

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.

Obtained from: NetBSD, me

merge of parallel duplicate work by Steve Price and myself. :-]

There are some changes to the build that are my fault...  mkinit.c was
trying (poorly) to duplicate some of the work that make(1) is designed to
do.  The Makefile hackery is my fault too, the depend list was incomplete
because of some explicit OBJS+= entries, so mkdep wasn't picking up their
source file #includes.

This closes a pile of /bin/sh PR's, but not all of them..

Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter