Revision 478221

Add ZeroC Ice 3.7.1 as new ports devel/{ice37|php-ice37|py-ice37}

Upgrading from Ice 3.6 isn't trivial, as it requires application
code changes. Therefore a new set of ports was created.

Marked devel/{ice|php5-ice|py-ice} as conflicting (and vice versa).

PR:		221141