K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2017-01-05T20:44:45.071409Z
K 7
svn:log
V 565
Put proper prototypes in tcpd.h

Clang 4.0.0 complains about tcpd.h's not-really-prototypes, e.g.:

    /usr/include/tcpd.h:75:24: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
    extern int hosts_access();              /* access control */
                           ^

To fix this, turn these declarations into real prototypes.  While here,
garbage collect the incompatible rfc931() function from scaffold.c, as
it is never used.

Reviewed by:	emaste
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D9052

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