Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

On request of joel@:

- Remove the 3rd clause of the UC Berkeley copyrighted files.
- For the files added copyrighted by me, move the "All rights
reserved" to the next line.

Long awaited update to the calendar system:

- Repeating events which span multiple years (because of -A, -B or
just the three days before the end of the year).

- Support for lunar events (full moon, new moon) and solar events
(equinox and solstice, chinese new year). Because of this, the
options -U (UTC offset) and -l (longitude) are available to
compensate if reality doesn't match the calculated values.

MFC after: 1 month

- Remove times.h from C programs that does not manipulate with time at
all.
- Remove pathnames.h from all but io.c since it's the only module that
used these definations.

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

Move functions which are only locally used into their C files and
make them static.

usage() in calendar.c
event_*() in io.c

PR: bin/118644
Approved by: bde@ (mentor)

style(9)ify usr.bin/calendar

PR: bin/118644
Approved by: bde@ (mentor)
MFC after: 1 week

ANSIfy function definitions.
Move some extern declarations to a header file.
Remove an unneeded extern declaration for optarg.

Fix the usage() to match style(9).

Add two new options:

-W is like -A (number of days in the future to consider, but also
specifies that we don't want special treatment at weekends.
-F changes our notion of "Friday" (the day before the weekend).

Arguably, calendar(1) is broken to have special treatment of weekends
by default, but this method maintains POLA.

Style improvements recommended by Bruce as a follow up to some
of the recent WARNS commits. The idea is:

1) FreeBSD id tags should follow vendor tags.
2) Vendor tags should not be compiled (though copyrights probably should).
3) There should be no blank line between including cdefs and __FBSDIF.

WARNS=2 fixup (mostly. Some are Hard To Fix(tm), so NO_WERROR is set)
Use __FBSDID().
Sort some headers.

Remove redundant declaration of optind. It has been declared in unistd.h
for ages.

List the -t option in usage().

PR: 21734
Submitted by: Giorgos Keramidas <keramida@ceid.upatras.gr>

Add missing $FreeBSD$ tags

Don't add '?' to getopt's options.

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Initialize the group list when we switch uids when run as
root with "calendar -a". Drop all privs when execing other
programs.

Obtained from: OpenBSD

Localize it
Handle Orthodox Eastern
-Wall cleanup

- handle events that move around from year to year, i.e.,
``the last Monday in April'
- handle easter

new options
-f calendarfile
-A days
-B days

Calendar HOME directory ~/.calendar
don't sent mail if ~/.calendar/nomail exist

Change error diagnostic to be less confusing:
no calendar file -> no calendar file in current directory

Remove hack inserted by me long time ago (cd $HOME for user-called case),
no other system do it and it can cause problem with multi-calendars
for single user.

Delete bogus referneces to timezone code internal header file `tzfile.h',
which is no longer bogusly installed in /usr/include.

Remove trailing whitespace.

Fix for two problems:
Calendar not cd $HOME when running by user
Calendar calls cpp with # lines allowed

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Usr.bin Sources