Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Replace index() and rindex() calls with strchr() and strrchr().

The index() and rindex() functions were marked LEGACY in the 2001
revision of POSIX and were subsequently removed from the 2008 revision.
The strchr() and strrchr() functions are part of the C standard.

This makes the source code a lot more consistent, as most of these C
files also call into other str*() routines. In fact, about a dozen
already perform strchr() calls.

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 a use of u_int32_t to uint32_t.

PR: bin/93172
Submitted by: Robert Millan <rmh at aybabtu dot com>
MFC after: 1 week

- For variables holding offset values, use off_t rather than
int, long int or u_int32_t. This changes the interface of
all the CRC calculation and output functions from cksum.
- Print variables of type off_t as intmax_t using a cast and %jd.
- Use the standardized uint32_t type instead of u_int32_t.
To have uint32_t defined, include <stdint.h> where necessary.
Style(9):
- Move #include directives where they belong (esp. crc32.c).
- Add empty lines between #include directives of system headers,
standard library headers and local headers.
- Test a pointer value against NULL.
- Put a space after the return keyword.

PR: bin/48424

ANSIify function definitions to avoid a warning.

Consistently use FBSDID

remove __P

WARNS=2 fixup.
kill 'register' keyword.

Include missing header files which define functions for which gcc has
builtins (e.g., exit, strcmp).

Minimal use of .Ar and .Nm.
Add section number to .Xr reference.
Add DIAGNOSTICS section name.
Remove unused #includes.
Be consistant in the parsing of flags and add missing option in usage string.
Add rcsid.

$Id$ -> $FreeBSD$

cksum does a 32-bit checksum, so it needs to use u_int32_t variables,
not u_long. With this change, cksum stops core dumping on alpha (not
a good sign!) and actually computes the same values as it does on i386.

Need to skip argv[0] when we are named "sum".

When called "sum", it is not documented as accepting any arguments.

Add canonical 32bit crc as alorithm 3.

PR: 4615
Reviewed by: phk
Submitted by: Mike Meyer <mwm@shiva.the-park.com>

Default to `cksum' instead of to `sum' for unusual program names.
Mention `sum' in the usage message.

Merge from Lite2 (make the command `sum' an alias for `cksum -o 1', and
reject -o args other than "1" or "2").

Update manpage to newer version. Use err(3).

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

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