Don't restrict what login name may be removed, the account may
have been made with a tool other than adduser and thus may use
characters adduser considers illegal. OK henning@ and krw@

Typo, "TMP_PW" used where "NEW_PW" was intended; fixes /etc/ptmp
deletion when rmuser is aborted. From Jason DiCioccio

Don't delete ptmp if we didn't create it ourselves; Brian Poole

another username limit issue; ianm@cit.uws.edu.au

Fix some warnings and take advantage of perl5 system defines

In adduser, use /etc/ptmp as a lock file like the other passwd programs.
Currently it is just kept empty which is not so great.

Use syso

Fix some warnings and take advantage of perl5 system defines

In adduser, use /etc/ptmp as a lock file like the other passwd programs.
Currently it is just kept empty which is not so great.

Use sysopen() with explicit file modes so there is no race whereby
a user could see the contents on the master.passwd temp file in rmuser.
Fix order of file opens in rmuser so we don't try and remove anything
unless we can lock all our files.

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Fix check for valid user name in interactive use

sync with FreeBSD, except for the damned tcl script.