Update old-style definitions to ANSI, remove a couple of register
definitions along the way. Fixed gcc 4.1 build (thank you vax)

Use C89 Prototypes.
Remove use of __P

use %option noinput

input() is not used, so don't provide it.

use %option instead of #define YY_NO_...

Remove clause 3 and 4 from TNF licenses

Use syslog(3) instead of err(3) to log errors.
Based on email conversation with Brian Ginsbach.

Add '%option never-interactive' to nslexer.l, to prevent isatty() from
being called unnecessarily.
Per

Use syslog(3) instead of err(3) to log errors.
Based on email conversation with Brian Ginsbach.

Add '%option never-interactive' to nslexer.l, to prevent isatty() from
being called unnecessarily.
Per discussion on current-users@ between Christian Biere and Greg Woods.

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Fix signed/unsigned comparison warnings.

Fixes from Bill Fenner <fenner@research.att.com> for problems he found
in FreeBSD's port of this nsswitch code:

- Don't ignore unknown characters. The old lexer would treat
hosts:!!!!!!!!@@@@@$%^&

Fixes from Bill Fenner <fenner@research.att.com> for problems he found
in FreeBSD's port of this nsswitch code:

- Don't ignore unknown characters. The old lexer would treat
hosts:!!!!!!!!@@@@@$%^&*()()*$(files{}{}|||++!)(dns
exactly the same as
hosts: files dns

- Recover from errors by looking for the end of a line. This means
that having a syntax error near the top of the file doesn't prevent
a service at the bottom of the file with no syntax error from being
looked up.

Thanks Bill!

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Need "namespace.h".

add rcsids

merge nsswitch into main branch