Sync usage with man page.

Output records in original order

Append to the list of output records instead of pushing on it, so we
don't reverse the order of records (when not sorting).

Use memcpy for copying out lastlog and lastlogx text

Lastlog and lastlogx text fields are not NUL-terminated when original data
is truncated.

If the passwd entry is not found for a lastlogx entry, cons up a fake
struct passwd where pw_name is the numeric uid in parentheses. This was
already implemented for lastlog entries in revision 1.13.

If -n is specified more than once, also print the user numerically
(ie, uid instead of username) for lastlog entries. This was already
implemented for lastlogx entries in revision 1.13.

Reorder the lastlogx host name numeric condition so it better matches
the user name numeric condition.

Size output columns dynamically by default to fit contents.

branches: 1.15.44;
__dead + ANSIfy

Fix WARNS=4 (-Wshadow -Wcast-qual)

branches: 1.13.28;
If the passwd entry is not found for a lastlog entry, cons up a fake
struct passwd where pw_name is the numeric uid in parentheses.

If -n is specified more than once, also print the user numerically
(ie, uid instead of username).

Avoid a NULL pointer dereference. From Karim Ayad in PR bin/28958.

Use sockaddr_snprintf()

The size_t type isn't necessarily an int (on arm it's an unsigned int),
so add casts to int before using as a printf field width specifier.

Add support for lastlogx output. Unfortunately not many programs use it
yet.

branches: 1.8.4;
Fixed a bug that made lastlogin ignore the first user argument

Add sorting based on last login time via -t (most recent first a la ls(1)).
Add reverse of current sort via -r (like ls(1) as well.)
Add a couple of lines of documentation to the man page about the two new
options.

convert to use getprogname()

More #include <stdlib.h> string, etc. cleanup

change includes to fix compiler warning

WARNSify

Don't keep trying getpwuid(0) when ll_time == 0! This brings down the
execution time from 5 minutes -> 1 second in our password file.

branches: 1.1.1;
Initial revision