Change PHP default version to 7.0

[tz]

Summary

Aloha,

in preparation of changing the default PHP version from 5.6 to 7.0 i did a test and noticed some fallout. Therefore i set IGNORE_WITH_PHP for all the ports listed below. You can see details in the commit:
https://svnweb.freebsd.org/changeset/ports/456517

Please also note, that PHP 7.0 is already no longer actively supported and only gets security updates. It will reach its EOL in December 2018. Therefore i'm planing another change of the default version to 7.1 in second quarter of 2018. I'm not going directly to 7.1 because there are incompatibilities between 7.0 and 7.1 and not every software has already adopted it yet.

I reused the UPDATING text from the switch from 5.4 to 5.6. Maybe we can rephrase it better, but i'm currently on very very low time.

Greetings,
Torsten

[mat]

I think that it would be better to first finish the PHP Flavors before changing the version. Because when the PHP Flavors are in, there is no need of a default version any more.

[tz]

In D13544#283323, @mat wrote:

I think that it would be better to first finish the PHP Flavors before changing the version. Because when the PHP Flavors are in, there is no need of a default version any more.

Mh, you are right. I will continue my work at PHP Flavors next year. There is plenty of time to get it right.