inetd: remove redundant tests before calling isspace

inetd: prepare for lint's strict bool mode

Lint's strict bool mode considers bool incompatible with the other
scalar types. This makes the type of expressions more visible in the
code. In particul

inetd: prepare for lint's strict bool mode

Lint's strict bool mode considers bool incompatible with the other
scalar types. This makes the type of expressions more visible in the
code. In particular, conditions of the form '!strcmp(...)' are no
longer allowed, they have to be written as 'strcmp(...) == 0'.

The operator '!' cannot be used with sep->se_wait since that has type
pid_t, not bool.

No change to the resulting binary.

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inetd: remove trailing whitespace

- don't compare pointer with \0. in this case, *pointer is wanted,
not \0 -> NULL, as we just tested pointer, and this is wanting to
be the standard "is this string NULL or nul?" idiom.

include <netipsec/ipsec.h> rather than <netinet6/ipsec.h> from userland
where possible, for consistency and compatibility to FreeBSD
(exception: KAME specific statistics gathering in netstat(1) and s

include <netipsec/ipsec.h> rather than <netinet6/ipsec.h> from userland
where possible, for consistency and compatibility to FreeBSD
(exception: KAME specific statistics gathering in netstat(1) and systat(1))

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- when we close an se_fd, set it to -1
- fix int/ssize_t/size_t/socklen_t issues
- fix casts
- remove unused variables
- fix prototypes
- fix const
- remove unneeded casts

Add (unsigned char) cast to ctype functions

sync with latest libipsec.
since outgoing and incoming policy is separated, inetd can take multiple
policy specification, separated by ";".