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)

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

Change all our own code to use st_*tim instead of st_*timespec.

Also remove some local patches to diff(1) which are now unneeded.

Don't truncate the output file before making sure that we can
read at least 1 byte from the input file without problems. This
fixes a bug in uncompress(1) that causes the accidental removal
of files that happen to have the same name as the output file,
even when the uncompression fails and is aborted, i.e.:

$ echo hello world > hello
$ touch hello.Z
$ ls -l hello*
-rw-rw-r-- 1 giorgos giorgos 12 Jun 14 13:33 hello
-rw-rw-r-- 1 giorgos giorgos 0 Jun 14 13:33 hello.Z
$ ./uncompress -f hello
uncompress: hello.Z: Inappropriate file type or format
$ ls -l hello*
-rw-rw-r-- 1 giorgos giorgos 0 Jun 14 13:33 hello.Z
$

PR: 46787
Submitted by: keramida

ANSIify function definitions to avoid a warning.

As required by SUSv3, a file argument of "-" causes standard input
to be compressed/decompressed to standard output.

Compression ratio statistics should be written to stderr instead of stdout.

Use exit status 2 to indicate that the file was not compressed because
its size would not be reduced (SUSv3).

unifdef -D__STDC__

remove __P

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.

Use __FBSDID().
Use a better choice than size_t for vertain variables.
Fix some comment alignment.

WARNS=2 fix and 'register' removal.

Mark some functions as __printflike()

MFC after: 1 week

Don't depend on <sys/stat.h> bogusly including <sys/time.h> (and thereby
<time.h>).

From PR submitter:

compress uses setfile() to make flags, ownership and mode of the output
the same as those of the original. However, if the filesystem holding the
output file doesn't support these operations, compress prints a warning.
This bites a bit with NFS directories, which always fail the chflags()
operation. If the file system doesn't support the operation, then the
flags data wasn't valid on the original file anyway, so the warning is
spurious.

Submitted by: bin/16981 (Peter Edwards <peter.edwards@ireland.com>)

Add DIAGNOSTICS section name. Spelling

Tweaks to allow compiling -Wall (mostly adding "const" to char rcsid[]).

Fixed previous commit to actually work. The wrong variable was initialized
earlier (with style bugs of course), so zcat was an alias for uncompress
instead of `uncompress -c'.

Behave like zcat if invoked as zcat. We don't install as zcat; this just
makes us more useful in a tight environment.

Submitted by: Wilfredo Sanchez <wsanchez@apple.com>

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

Finished adjustments for cleaning up declaration of zopen(). Moving the
declaration from <stdio.h> to "zopen.h" left it undeclared here.

Remove trailing whitespace.

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

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