Log Message:
ucspi-ssl: remove non-meaningful 'inet6' option. Bump PKGREVISION.

The dependency was to ensure the runtime presence of tcprules(1),
described at HOMEPAGE thus:

    Optional but indispensible: ucspi-tcp6 to build the cdb to control
    incoming connections for sslserver using tcprules coming with the
    ucspi-tcp6 package. Older versions of ucspi-tcp can be used as well,
    but don't provide neither IPv4 CIDR nor IPv6 capabilities. The
    generated cdb however, is binary compatible among all versions.

Depending on either of net/ucspi-tcp{,6} here was complicating the
dependency graph in exchange for... still getting in the way of other
packages installing what they need (e.g. mail/bincimap). Trust the
sysadmin to notice if they don't already have tcprules and decide what
to install in that case.