Catch up with all the lint warnings since exit on warning was disabled.
Disable 'missing header declaration' and 'nested extern' warnings for now.

getlogin_r: use strcpy(). We check namelen before copying the result.
gcc 8 -Wstringop-overflow is uhappy when the specified bounds depend
on the length of the source and is not smart enough to see the check
we do. Besides we don't want the padding effect of strncpy() here.

branches: 1.15.48;
merge christos-time_t

Change the second argument of getlogin_r() from int to size_t, per POSIX.

branches: 1.13.4; 1.13.6;
Add getlogin_r. Manual page changes mostly lifted from FreeBSD.

branches: 1.12.32;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Merge the nathanw_sa branch.

branches: 1.10.6;
Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

Add extern.h to get missing __getlogin prototype
Fix RCSID's

Update for the new internal name for __getlogin().

branches: 1.6.4;
update from Lite, with local changes. fix Ids, etc.

Fix bug #24 by renaming _logname_valid to __logname_valid.

Moved cuserid() from getlogin.c to its own file, cuserid.c.
getlogin() and cuserid() do very different things, getlogin() is POSIX,
while cuserid() is not (it was removed in the 1990 revision).

Declare rcsid strings so they are stored in text segment.

Add even more RCS frobs.

branches: 1.1.1;
Initial revision